BOC Sciences provides a wide range of research chemicals and biochemicals including inhibitors, building blocks, GMP Products, impurities and metabolites, APIs for Veterinary, Natural Compounds, ADCs, Stem Cell Molecule and chiral compounds.
| Product | Description | |
|---|---|---|
| Lantibiotic nisin-U | Lantibiotic nisin-U is an antibacterial peptide isolated from Lactococcus lactis subsp. lactis (Streptococcus lactis). lactis. It has activity against gram-positive bacteria. Synonyms: Ile-Thr-Ser-Lys-Ser-Leu-Cys-Thr-Pro-Gly-Cys-Lys-Thr-Gly-Ile-Leu-Met-Thr-Cys-Pro-Leu-Lys-Thr-Ala-Thr-Cys-Gly-Cys-His-Phe-Gly. |  |
| Lantibiotic nisin-Z | A bacteriocin polypeptide antibiotic known as Lantibiotic. It is synthesized by Lactococcus lactis and produced by gram-positive bacteria to reduce competitive strain from other gram-positive bacteria. Synonyms: 27-L-asparagine-Nisin A. CAS No. 137061-46-2. Molecular formula: C141H229N41O38S7. Mole weight: 3331.03. | |
| Larazotide acetate | Larazotide acetate is a tight junction regulator and reverses leaky junctions to their normally closed state. Synonyms: H-Gly-Gly-Val-Leu-Val-Gln-Pro-Gly-OH.CH3CO2H. Grade: 98%. CAS No. 881851-50-9. Molecular formula: C34H59N9O12. Mole weight: 785.9. | |
| L-Arginine hydrochloride | L-Arginine hydrochloride is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis. Protein supplement in health care products. Uses: Ingredient of health care products. Synonyms: Arginine Hydrochloride; L-Arginine monohydrochloride; L-Arginine HCl; H-Arg-OH.HCl; (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid hydrochloride. Grade: 98%. CAS No. 1119-34-2. Molecular formula: C6H15ClN4O2. Mole weight: 210.662. | |
| Lasalocid | It is produced by the strain of Str. lasaliensis. It has anti-gram-positive bacteria, protozoa and mycobacterium activity. It is added to feed to prevent coccidiosis in chickens. Synonyms: Lasalocid A; Lasalocide; Lasalocidum; Antibiotic X 537A; 6-(7-(5-Ethyl-5-(5-ethyltetrahydro-5-hydroxy-6-methyl-2H-pyran-2-yl)tetrahydro-3-methyl-2-furanyl)-4-hydroxy-3,5-dimethyl-6-oxononyl)-2-hydroxy-3-methylbenzoic acid, (2R-(2alpha(2S*(3R*,4S*,5S*,7R*),3S*,5S*),5alpha,6beta))-. Grade: > 95%. CAS No. 25999-31-9. Molecular formula: C34H53O8. Mole weight: 590.80. | |
| Lasalocid sodium | Lasalocid sodium is a cationic ionophore antibiotic obtained from Streptomyces lasaliensis that, among other effects, dissociates the calcium fluxes in muscle fibers. It is used as a coccidiostat, especially in poultry. Synonyms: Lasalocid A Sodium Salt; Avatec; Bovatec. Grade: >95% by HPLC. CAS No. 25999-20-6. Molecular formula: C34H53NaO8. Mole weight: 612.77. | |
| L-Azetidine-2-carboxylic acid | Endogenous metabolites; Specific proline antagonist; intermediates in synthesis of abnormally high molecular weight polypeptides. Synonyms: (S)-2-Azetidine-2-carboxylic acid. Grade: ≥ 97% (Assay). CAS No. 2133-34-8. Molecular formula: C4H7NO2. Mole weight: 101.10. | |
| L-Carnitine | L-carnitine is a constituent striated muscle and liver, and also a cofactor involved in fatty acid metabolism for transporting fatty acids through the inner mitochondrial membrane. It also acts as an inhibitor of HDAC. Nutritional supplement in health care products. Uses: Ingredient of health care products. Synonyms: Levocarnitine; Vitamin BT; (R)-Carnitine; Carnitor; ST-198; ST 198; ST198; (3R)-3-hydroxy-4-(trimethylazaniumyl)butanoate. Grade: 98%. CAS No. 541-15-1. Molecular formula: C7H15NO3. Mole weight: 161.201. | |
| L-Carnosine | L-Carnosine is a dipeptide concentrated in muscle and brain tissue. It acts as an antioxidant that scavenges reactive oxygen species (ROS) and transition metal ions. It is also a neurotransmitter in the brain. L-Carnosine has potential antioxidant and anti-glycosylation activities, preventing acetaldehyde-induced non-enzymatic glycosylation and protein coupling. It is also a substrate for carnosinase detection, which can maintain pH balance in the body and extend cell life. Synonyms: Carnosine; β-Alanyl-L-histidine; (2S)-2-(3-Aminopropanamido)-3-(1H-imidazol-4-yl)propanoic acid; Dragosine; Ignotin; Ignotine; Karnozin; N-(β-Alanyl)-L-histidine; NSC 524045; Sevitin; β-Alanylhistidine. Grade: >95%. CAS No. 305-84-0. Molecular formula: C9H14N4O3. Mole weight: 226.24. | |
| L-Cycloserine | It is produced by the strain of Erwinia uredovora 821. L-cycloserine is an excitatory amino acid that is effective against Mycobacterium tuberculosis. It has anti-gram-negative bacterial activity. Uses: Inhibitor of ketosphinganine synthase, leading to blockade of sphingosine biosynthesis. Synonyms: (S)-(-)-Cycloserine; (S)-Cycloserine; Cyclo-L-serine; L-4-Amino-3-isoxazolidinone; L-Cycloserine; Levcycloserine; (S)-4-Amino-3-isoxazolidinone; Levcicloserina; Levcycloserinum. Grade: ≥ 98% (HPLC). CAS No. 339-72-0. Molecular formula: C3H6N2O2. Mole weight: 102.09. | |
| L-Cysteic acid monohydrate | A major metabolite of non-essential amino acid L-Cysteine. Synonyms: 3-Sulfo-L-alanine Monohydrate; (R)-2-Amino-3-sulfopropanoic Acid Monohydrate. Grade: 98%. CAS No. 23537-25-9. Molecular formula: C3H9NO6S. Mole weight: 187.17. | |
| L-Cysteine | L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly used as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours. Synonyms: Cysteine, L-; (R)-2-Amino-3-mercaptopropanoic acid; (R)-2-Amino-3-sulfanylpropanoic acid; (R)-Cysteine; L-(+)-Cysteine; L-Alanine, 3-mercapto-; L-Cys; Cystein; Cysteine; E 920; Half-cystine; NSC 8746; Propanoic acid, 2-amino-3-mercapto-, (R)-; Thioserine; β-Mercaptoalanine. Grade: ≥95%. CAS No. 52-90-4. Molecular formula: C3H7NO2S. Mole weight: 121.16. | |
| L-Cysteine Hydrochloride | L-cysteine hydrochloride is the salt form of L-cysteine, which acts as a histidine ammonia-lyase inhibitor. Protein supplement in health care products. Uses: Ingredient of health care products. Synonyms: (r)-cysteinehydrochloride; (R)-Cysteine-hydrochloride; 3-Mercaptoalanine hydrochloride; Cystein chloride; Cysteine chlorhydrate; Cysteine chlorohydrate; Cysteine, hydrochloride, L-; cysteinechlorhydrate. Grade: 98%. CAS No. 52-89-1. Molecular formula: C3H7NO2S.HCl. Mole weight: 157.61. | |
| L-DABA | L-DABA, (L-2,4-Diaminobutyric acid) is a noncompetitive GABA transaminase inhibitor (IC50 > 500 μM) with antitumor activity in vivo and in vitro. Synonyms: (2S)-2,4-diaminobutanoic acid; 2,4-diaminobutyric acid; 2,4-diaminobutyric acid dihydrochloride, (+-)-isomer; 2,4-diaminobutyric acid dihydrochloride, (S)-isomer; 2,4-diaminobutyric acid monohydrochloride, (+-)-isomer; 2,4-diaminobutyric acid monohydrochloride, (S)-isomer; 2,4-diaminobutyric acid, (+)-isomer; 2,4-diaminobutyric acid, (+-)-isomer; 2,4-diaminobutyric acid, (R)-isomer; 2,4-diaminobutyric acid, (S)-isomer; L-2,4-diaminobutyric acid. CAS No. 1758-80-1. Molecular formula: C4H10N2O2. Mole weight: 118.13. | |
| Lepirudin | Lepirudin is an anticoagulant that acts as a direct thrombin inhibitor. Lepirudin binds to both free and clot-bound thrombin. Lepirudin is approved for the treatment of heparin-induced thrombocytopenia (HIT). Uses: The treatment of heparin-induced thrombocytopenia (hit). Synonyms: (Leu1,Thr2)-Hirudin (desulfated); Lepirudin; Refludan; Refludin; Hbw 023; Hbw-023; Hbw023. CAS No. 138068-37-8. Molecular formula: C287H440N80O111S6. Mole weight: 6979.41. | |
| Leptin (22-56), human | Leptin (22-56) (human) is the fragment of leptin, a hormone produced by the fat cells in human body. Synonyms: H-Val-Pro-Ile-Gln-Lys-Val-Gln-Asp-Asp-Thr-Lys-Thr-Leu-Ile-Lys-Thr-Ile-Val-Thr-Arg-Ile-Asn-Asp-Ile-Ser-His-Thr-Gln-Ser-Val-Ser-Ser-Lys-Gln-Lys-OH; L-valyl-L-prolyl-L-isoleucyl-L-glutaminyl-L-lysyl-L-valyl-L-glutaminyl-L-alpha-aspartyl-L-alpha-aspartyl-L-threonyl-L-lysyl-L-threonyl-L-leucyl-L-isoleucyl-L-lysyl-L-threonyl-L-isoleucyl-L-valyl-L-threonyl-L-arginyl-L-isoleucyl-L-asparagyl-L-alpha-aspartyl-L-isoleucyl-L-seryl-L-histidyl-L-threonyl-L-glutaminyl-L-seryl-L-valyl-L-seryl-L-seryl-L-lysyl-L-glutaminyl-L-lysine. Grade: >95%. CAS No. 183598-56-3. Molecular formula: C171H298N50O56. Mole weight: 3950.49. | |
| Leptin Fragment 116-130 Amide mouse | A synthetic leptin peptide fragment. Synonyms: LEP 116-130. Grade: >95%. CAS No. 258276-95-8. Molecular formula: C64H109N19O24S. Mole weight: 1560.73. | |
| Leptin (human) | Leptin (human) is a peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Synonyms: 1: PN: WO0038651 SEQID: 1 unclaimed protein; 22-167-Protein (human gene obese 167-amino acid isoform precursor); Anti-obesity protein (human); Leptin (human clone 3 gene Ob); Leptin (human gene ob protein 146-amino acid fragment); Leptin (synthetic human mutant 15B); Protein (human gene ob active isoform). Grade: ≥95% by HPLC. CAS No. 177404-21-6. | |
| Leptomycin A | a potent anti-fungal antibiotic. Leptomycin A is a highly specific inhibitor of export protein CRM1. Synonyms: Leptomycin A; Jildamycin; 87081-36-5; (2E,10E,12E,16E,18E)-6-hydroxy-3,5,7,9,11,15,17-heptamethyl-19-(3-methyl-6-oxo-2,3-dihydropyran-2-yl)-8-oxononadeca-2,10,12,16,18-pentaenoic acid; NSC 369326; NSC369326; ATS1287 A, LMA; SCHEMBL14190847; MFCD01711669; BS-1083; NSC-369326; 19-(3,6-Dihydro-3-methyl-6-oxo-2H-pyran-2-yl)-3,5,7,9,11,15,17-heptamethyl-6-hydroxy-8-oxo-2,10,12,16,18-nonadecapentaenoic acid; 2,10,12,16,18-Nonadecapentaenoic acid, 19-(3,6-dihydro-3-methyl-6-oxo-2H-pyran-2-yl)-3,5,7,9,11,15,17-heptamethyl-6-hydroxy-8-oxo-; 2,10,12,16,18-Nonadecapentaenoic acid, 19-(3,6-dihydro-3-methyl-6-oxo-2H-pyran-2-yl)-6-hydroxy-3,5,7,9,11,15,17-heptamethyl-8-oxo-; DA-54856; NS00011727; Leptomycin A; Antibiotic ATS 1287A; Antibiotic PD 118607; Jildamycin; (2E,5S,6R,7S,9R,10E,12E,15R,16Z,18E)-6-Hydroxy-3,5,7,9,11,15,17-heptamethyl-19-[(2S,3S)-3-methyl-6-oxo-2,3-dihydropyran-2-yl]-8-oxononadeca-2,10,12,16,18-pentaenoic acid; 2,12,16,18-Nonadecapentaenoic acid, 19-(3,6-dihydro-3-methyl-6-oxo-2H-pyran-2-yl)-6-hydroxy-3,5,7,9,11,15,17-heptamethyl-8-oxo-. Grade: >99% by HPLC. CAS No. 87081-36-5. Molecular formula: C12H14N2O3S. Mole weight: 266.32. | |
| Leptomycin B | a potent anti-fungal antibiotic. Leptomycin B is an inhibitor of export protein CRM1. Synonyms: 19-(3,6-Dihydro-3-methyl-6-oxo-2H-pyran-2-yl)-17-ethyl-6-hydroxy-3,5,7,9,11,15-hexamethyl-8-oxo-2,10,12,16,18-Nonadecapentaenoic Acid; Elactocin; Mantuamycin; Antibiotic CI 940; PD 114720. CAS No. 87081-35-4. Molecular formula: C33H48O6. Mole weight: 540.73. | |
| Lestaurtinib | Lesraurtinib, also known as CEP701, KT 5555, SP 924, is an orally bioavailable indolocarbazole derivative with antineoplastic properties. Lestaurtinib inhibits autophosphorylation of FMS-like tyrosine kinase 3 (FLT3), resulting in inhibition of FLT3 activity and induction of apoptosis in tumor cells that overexpress FLT3. Synonyms: CEP-701; KT-5555; SP 924; (9S,10S,12R)-2,3,9,10,11,12-Hexahydro-10-hydroxy-10-(hydroxymethyl)-9-methyl-9,12-epoxy-1H-diindolo[1,2,3-fg:3',2',1'-kl]pyrrolo[3,4-i][1,6]benzodiazocin-1-one. Grade: ≥98%. CAS No. 111358-88-4. Molecular formula: C26H21N3O4. Mole weight: 439.46. | |
| L-Ethionine | Ethionine is an antimetabolite and methionine antagonist. It also produces liver neoplasms. Uses: Ethionine-induced inhibition of protein synthesis and lowering of atp level in the liver. Synonyms: H-Eth-OH; (S)-2-Amino-4-(ethylthio)butanoic acid. Grade: 98%. CAS No. 13073-35-3. Molecular formula: C6H13NO2S. Mole weight: 163.24. | |
| (Leu13)-Motilin (human, porcine) | (Leu13)-Motilin (human, porcine) produces an excitatory reaction in the gastrointestinal tract of chickens, with varying sensitivity in different regions. The mechanisms of action are different between the proventriculus and the intestinal segments. Motilin analogues contract intestinal segments by acting directly on smooth muscle cells whereas in the proventriculus it causes contraction and enhancement of electric field stimulation-induced responses by acting on the intramural cholinergic neurons. Synonyms: H-Phe-Val-Pro-Ile-Phe-Thr-Tyr-Gly-Glu-Leu-Gln-Arg-Leu-Gln-Glu-Lys-Glu-Arg-Asn-Lys-Gly-Gln-OH; L-phenylalanyl-L-valyl-L-prolyl-L-isoleucyl-L-phenylalanyl-L-threonyl-L-tyrosyl-glycyl-L-alpha-glutamyl-L-leucyl-L-glutaminyl-L-arginyl-L-leucyl-L-glutaminyl-L-alpha-glutamyl-L-lysyl-L-alpha-glutamyl-D-arginyl-D-asparagyl-L-lysyl-glycyl-D-glutamine; Motilin (swine), 13-L-leucine-. Grade: 95%. CAS No. 59530-69-7. Molecular formula: C121H190N34O35. Mole weight: 2681.01. | |
| [Leu15]-Gastrin I (human) | A derivative of Gastrin I (human), an endogenous peptide produced by stomach and it acts as a selective CCK2 receptor agonist. Synonyms: H-DL-Pyr-Gly-DL-Pro-DL-Trp-DL-Leu-DL-Glu-DL-Glu-DL-Glu-DL-Glu-DL-Glu-DL-Ala-DL-Tyr-Gly-DL-Trp-DL-Leu-DL-Asp-DL-Phe-NH2. Grade: ≥98%. CAS No. 39024-57-2. Molecular formula: C98H126N20O31. Mole weight: 2080.16. | |
| [Leu31,Pro34]-Neuropeptide Y (human, rat) | [Leu31,Pro34]-Neuropeptide Y (human, rat) is a high affinity neuropeptide Y Y1 receptor agonist (Ki = 0.39 nM). Synonyms: [Leu31,Pro34]-NPY (human, rat); H-Tyr-Pro-Ser-Lys-Pro-Asp-Asn-Pro-Gly-Glu-Asp-Ala-Pro-Ala-Glu-Asp-Met-Ala-Arg-Tyr-Tyr-Ser-Ala-Leu-Arg-His-Tyr-Ile-Asn-Leu-Leu-Thr-Arg-Pro-Arg-Tyr-NH2; L-tyrosyl-L-prolyl-L-seryl-L-lysyl-L-prolyl-L-alpha-aspartyl-L-asparagyl-L-prolyl-glycyl-L-alpha-glutamyl-L-alpha-aspartyl-L-alanyl-L-prolyl-L-alanyl-L-alpha-glutamyl-L-alpha-aspartyl-L-methionyl-L-alanyl-L-arginyl-L-tyrosyl-L-tyrosyl-L-seryl-L-alanyl-L-leucyl-L-arginyl-L-histidyl-L-tyrosyl-L-isoleucyl-L-asparagyl-L-leucyl-L-leucyl-L-threonyl-L-arginyl-L-prolyl-L-arginyl-L-tyrosinamide. Grade: ≥95%. CAS No. 132699-73-1. Molecular formula: C189H284N54O56S. Mole weight: 4240.67. | |
| [Leu31,Pro34]-Neuropeptide Y (porcine) | [Leu31,Pro34]-Neuropeptide Y (porcine) is a high affinity neuropeptide Y Y1 receptor agonist (Ki = 0.54 nM). Synonyms: (Leu(31),pro(34))npy; 31-Leu-34-pro-neuropeptide Y; Pancreatic polypeptide (chicken), 1-L-tyrosine-4-L-lysine-6-L-aspartic acid-7-L-asparagine-10-L-glutamic acid-14-L-alanine-18-L-alanine-20-L-tyrosine-22-L-serine-23-L-alanine-25-L-arginine-26-L-histidine-28-L-isoleucine-30-L-leucine-31-L-leucine-34-L-proline. CAS No. 125580-28-1. Molecular formula: C190H286N54O56. Mole weight: 4222.63. | |
| [Leu5]-Enkephalin | [Leu5]-Enkephalin is an endogenous opioid agonist peptide with morphine-like activity. It inhibits electrically stimulated contractions in mouse vas deferens (IC50 = 11.4 nM). Synonyms: Leu-enkephalin; Leucine enkephalin; Leucyl-enkephalin; H-Tyr-Gly-Gly-Phe-Leu-OH; YGGFL; L-tyrosyl-glycyl-glycyl-L-phenylalanyl-L-leucine. Grade: ≥95%. CAS No. 58822-25-6. Molecular formula: C28H37N5O7. Mole weight: 555.62. | |
| [Leu5]-Enkephalin, amide | [Leu5]-Enkephalin, amide is a δ opioid receptor agonist peptide. Synonyms: Leu-Enkephalin amide; Leucine enkephalinamide; Enkephalinamide-leu; H-Tyr-Gly-Gly-Phe-Leu-NH2; L-tyrosyl-glycyl-glycyl-L-phenylalanyl-L-leucinamide; YGGFL. Grade: ≥95%. CAS No. 60117-24-0. Molecular formula: C28H38N6O6. Mole weight: 554.64. | |
| [Leu5]-Enkephalin TFA | [Leu5]-Enkephalin TFA is an endogenous opioid agonist peptide with morphine-like activity. It inhibits electrically stimulated contractions in mouse vas deferens (IC50 = 11.4 nM). Synonyms: L-Leucine, L-tyrosylglycylglycyl-L-phenylalanyl-, mono(trifluoroacetate) (salt); L-Leucine, N-[N-[N-(N-L-tyrosylglycyl)glycyl]-L-phenylalanyl]-, mono(trifluoroacetate) (salt); Acetic acid, trifluoro-, compd. with N-[N-[N-(N-L-tyrosylglycyl)glycyl]-L-phenylalanyl]-L-leucine (1:1); Leucine-enkephalin trifluoroacetate; H-Tyr-Gly-Gly-Phe-Leu-OH.TFA; YGGFL.TFA; L-tyrosyl-glycyl-glycyl-L-phenylalanyl-L-leucine trifluoroacetic acid. Grade: ≥95%. CAS No. 73563-78-7. Molecular formula: C28H37N5O7.C2HF3O2. Mole weight: 669.65. | |
| Leucinostatin A | It is produced by the strain of Paecilomyces lilacinus A-267. It's a peptide antibiotic. It has a strong anti-pathogenic and non-pathogenic yeast and fungi activity, but also has a medium anti-bacterial effect. It was previously reported that Leucinostatin A and B mixtures inhibited HeLa cells. 0.05 μg/mL of Leucinostatin A for a week (0.25 mg/kg?d) has inhibitory effect on the airy ascites carcinoma entity type, and for ascites type is invalid. Synonyms: Antibiotic 1907-VIII; Antibiotic CC 1014; Paecilotoxin A; Antibiotic P-168; beta-Alaninamide, cis-4-methyl-1-(4-methyl-1-oxo-2-hexenyl)-L-prolyl-(4S,6S)-6-hydroxy-4-methyl-8-oxo-L-2-aminodecanoyl-threo-3-hydroxy-L-leucyl-2-methylalanyl-L-leucyl-L-leucyl-2-methylalanyl-2-methylalanyl-N-(2-(dimethylamino)-1-methylethyl)-, (1(S-(E)),9(S))-; Tryanocidin. Grade: >95% by HPLC. CAS No. 76600-38-9. Molecular formula: C62H111N11O13. Mole weight: 1218.61. | |
| Leucomycin A1 | It is produced by the strain of Str. kitasatoensis. It's a macrolide antibiotic. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. After the C3 position on the lactone ring in the structure is acetylated, the activity in vitro is reduced, but the activity in vivo is enhanced, and the toxicity is also reduced. The antibacterial activity of Leucomycin group A is stronger than group B. It has been used in clinical and the indications are the same as erythromycin. Synonyms: 3-Deacetyljosamycin; Kitasamycin A1; Leucomycin V 4''-(3-methylbutanoate); LM-A1; Turimycin H-5; LeucoMycin V 4-isovalerate; 9-Dihydroniddamycin; 3-O-Deacetyljosamycin. Grade: >99% by HPLC. CAS No. 16846-34-7. Molecular formula: C40H67NO14. Mole weight: 785.96. | |
| Leucomycin A13 | It is a macrolide antibiotic produced by the strain of Str. kitasatoensis. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. Synonyms: Kitasamycin A13; 4B-hexanoate leucomycin V; Leucomycin V 4''-hexanoate. Grade: >99% by HPLC. CAS No. 78897-52-6. Molecular formula: C41H69NO14. Mole weight: 799.98. | |
| Leucomycin A4 | It is produced by the strain of Str. kitasatoensis. It's a macrolide antibiotic. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. After the C3 position on the lactone ring in the structure is acetylated, the activity in vitro is reduced, but the activity in vivo is enhanced, and the toxicity is also reduced. The antibacterial activity of Leucomycin group A is stronger than group B. It has been used in clinical and the indications are the same as erythromycin. Synonyms: Leukomycin A4; Leucomycin V 3-acetate 4''-butanoate; KitasaMycin A4. Grade: >99% by HPLC. CAS No. 18361-46-1. Molecular formula: C41H67NO15. Mole weight: 813.97. | |
| Leucomycin A5 | It is produced by the strain of Str. kitasatoensis. It's a macrolide antibiotic. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. After the C3 position on the lactone ring in the structure is acetylated, the activity in vitro is reduced, but the activity in vivo is enhanced, and the toxicity is also reduced. The antibacterial activity of Leucomycin group A is stronger than group B. It has been used in clinical and the indications are the same as erythromycin. Synonyms: Kitasamycin A5; Turimycin H4; Leukomycin A5; Leucomycin V 4''-butanoate. Grade: >98% by HPLC. CAS No. 18361-45-0. Molecular formula: C39H65NO14. Mole weight: 771.94. | |
| Leucomycin A9 | It is produced by the strain of Str. kitasatoensis. It's a macrolide antibiotic. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. After the C3 position on the lactone ring in the structure is acetylated, the activity in vitro is reduced, but the activity in vivo is enhanced, and the toxicity is also reduced. The antibacterial activity of Leucomycin group A is stronger than group B. It has been used in clinical and the indications are the same as erythromycin. Synonyms: Turimycin H2; Leucomycin V, 4B-acetate. CAS No. 18361-49-4. Molecular formula: C37H61NO14. Mole weight: 743.88. | |
| Leucomycin complex | Leucomycin complex is a family of closely related macrocyclic lactone antibiotics produced by streptomyces kitasatoensis. It is an animal health product for control of gram positive bacteria, gram negative cocci, leptospira and mycoplasma. Synonyms: Kitasamycin A1; Turimycin H5; Leucomycin V 4-isovalerate. Grade: >95% by HPLC. CAS No. 1392-21-8. Molecular formula: C35H59NO13. Mole weight: 701.8. | |
| Leucomycin V | It is produced by the strain of Str. kitasatoensis. It's a macrolide antibiotic. It has strong anti-gram-positive bacterial effect, and also has an effect on spirochetes, rickettsium and Chlamydia. After the C3 position on the lactone ring in the structure is acetylated, the activity in vitro is reduced, but the activity in vivo is enhanced, and the toxicity is also reduced. The antibacterial activity of Leucomycin group A is stronger than group B. It has been used in clinical and the indications are the same as erythromycin. Synonyms: Selectomycin; Turimycin; Antibiotic A 6599; Antibiotic JA-6599; Stereomycine; 4''-Deacylturimycin H; Deacylleucomycin A1; Deisovaleryl leucomycin A1. Grade: 97%. CAS No. 22875-15-6. Molecular formula: C35H59NO13. Mole weight: 701.84. | |
| Leucylarginine | Leucylarginine hinders antinociception induced by L-arginine. Synonyms: L-Leucyl-L-arginine; Leu-arg; Leucyl-arginine; L-Leu-L-Arg. Grade: >98%. CAS No. 26607-15-8. Molecular formula: C12H25N5O3. Mole weight: 287.36. | |
| Leucyl-phenylalanine | Leucyl-phenylalanine is a competitive inhibitor of both the peptidase and the esterase activities of carboxy peptidase Y. Synonyms: L-leucyl-L-Phenylalanine. CAS No. 3063-5-6. Molecular formula: C15H22N2O3. Mole weight: 278.35. | |
| Leupeptin | Leupeptin, a naturally occurring protease inhibitor, has potential applications in cosmetics due to its anti-inflammatory properties and ability to inhibit various proteases. It can be used in skincare products to help reduce inflammation and provide soothing effects to the skin. Additionally, Leupeptin's ability to inhibit proteases could contribute to the prevention of skin degradation and promote skin health by preserving the structural integrity of proteins in the skin matrix. Therefore, Leupeptin's applications in cosmetics may include anti-inflammatory and skin-protective effects, making it a valuable ingredient for products aimed at reducing skin irritation and promoting a healthy skin environment. It is a reversible, competitive inhibitor that targets serine and cysteine proteases, including trypsin, plasmin, calpain, papain, and cathepsins B, H, and L. Synonyms: Ac-Leu-Leu-Arg-CHO; Acetyl Tripeptide; L-Leucinamide, N-acetyl-L-leucyl-N-[4-[(aminoiminomethyl)amino]-1-formylbutyl]-, (S)-; N-Acetyl-L-leucyl-N-[(1S)-4-[(aminoiminomethyl)amino]-1-formylbutyl]-L-leucinamide; Acetyl-L-leucyl-L-leucyl-L-argininal; N-Acetyl-L-leucyl-L-leucyl-L-argininal; Ac-Leu-Leu-Arg-al; Ac-LLR-al. Grade: ≥95%. CAS No. 55123-66-5. Molecular formula: C20H38N6O4. Mole weight: 426.55. | |
| Leupeptin hemisulfate | Leupeptin Hemisulfate is a reversible inhibitor of serine and cysteine proteases. It can be used in skincare products to help reduce inflammation and provide soothing effects to the skin. Synonyms: Ac-Leu-Leu-Arg-CHO.1/2H2SO4; Acetyl Tripeptide; L-Leucinamide, N-acetyl-L-leucyl-N-[(1S)-4-[(aminoiminomethyl)amino]-1-formylbutyl]-, sulfate (2:1); L-Leucinamide, N-acetyl-L-leucyl-N-[4-[(aminoiminomethyl)amino]-1-formylbutyl]-, (S)-, sulfate (2:1); Leupeptin sulfate (2:1); N-Acetyl-L-leucyl-N-[(1S)-4-[(aminoiminomethyl)amino]-1-formylbutyl]-L-leucinamide hemisulfate; Acetyl-L-leucyl-L-leucyl-L-argininal hemisulfate; N-Acetyl-L-leucyl-L-leucyl-L-argininal hemisulfate; Ac-Leu-Leu-Arg-al.1/2H2SO4; Ac-LLR-al.1/2H2SO4. Grade: 95%. CAS No. 103476-89-7. Molecular formula: C20H38N6O4.1/2H2SO4. Mole weight: 475.59. | |
| Levetiracetam EP Impurity G | An impurity of Levetiracetam, a medication indicated for the treatment of epilepsy. Synonyms: L-α-Aminobutyramide; H-Abu(2)-NH2; H-Abu(α)-NH2; (S)-2-Aminobutanamide. CAS No. 7324-11-0. Molecular formula: C4H10N2O. Mole weight: 102.14. | |
| Levetiracetam Related Compound B | An impurity of Levetiracetam, a medication indicated for the treatment of epilepsy. Synonyms: L-2-Aminobutanamide HCl; S-2-Aminobutanamide HCl; (S)-2-Aminobutanamide Monohydrochloride. Grade: ≥ 98% (HPLC). CAS No. 7682-20-4. Molecular formula: C4H11ClN2O. Mole weight: 138.6. | |
| Levodopa Related Compound (3-(3,4-Dimethoxyphenyl)-L-Alanine) | DOPA intermediate. Synonyms: 3-Methoxy-O-methyl-L-tyrosine; (S)-3,4-Dimethoxyphenylalanine; β-(3,4-Dimethoxyphenyl)-L-alanine; 3,4-Dimethoxy-L-phenylalanine. Grade: ≥ 97%. CAS No. 32161-30-1. Molecular formula: C11H15NO4. Mole weight: 225.24. | |
| Levofloxacin hydrate | The hydrate form of Levofloxacin, an Ofloxacin derivative, could be commonly used as an antibacterial agent through influencing DNA replication. It is an antibiotic with activity against gram-negative bacteria. Uses: Anti-bacterial agents. Synonyms: Levofloxacin Hemihydrate; 138199-71-0; Levofloxacin hydrate; Nofaxin; Volequin; Levofloxacin (hydrate); Dynaquin; Ofloxacin, (s)-; 6GNT3Y5LMF; Levofloxacin (as hemihydrate); UNII-6GNT3Y5LMF; RWJ-25213; (S)-9-Fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid hydrate(2:1); Levaquin (TN); (-)-(S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-meth. Grade: 98%. CAS No. 138199-71-0. Molecular formula: C18H21FN3O4.5. Mole weight: 370.38. | |
| (±)-Levomepromazine-[d6] maleate | (±)-Levomepromazine-[d6] maleate is the labelled salt of (±)-Levomepromazine. Levomepromazine is a phenothiazine neuroleptic drug. It is a low-potency antipsychotic with strong analgesic, hypnotic and antiemetic properties and is mainly used in palliative care. Synonyms: (±)-Levomepromazine-d6 maleate; (±)-Levoprome-d6 maleate; (±)-Nozinan-d6 maleate; (±)-2-Methoxytrimeprazine-d6 maleate; (±)-Mepromazine-d6 maleate; (±)-Hirnamin-d6 maleate; (±)-Neozine-d6 maleate; (±)-Methotrimeprazine-D6 maleate; [3-(2-Methoxyphenothiazin-10-yl)-2-methylpropyl]-dimethylamine-D6 maleate. Grade: 95% by HPLC; 98% atom D. Molecular formula: C23H22D6N2O5S. Mole weight: 450.58. | |
| Lewis A-PAA-biotin | Lewis A-PAA-biotin. | |
| Lewis A trisaccharide-sp-biotin | Lewis A trisaccharide-sp-biotin is a novel biotinylated compound used in biomedical field for its ability to bind specifically to Lewis A trisaccharide antigens. This product plays a crucial role in developing targeted drug delivery systems and diagnostic applications for studying diseases associated with Lewis A expression, such as various cancers and inflammatory disorders. CAS No. 870891-35-3. Molecular formula: C39H67N5O18S. Mole weight: 926.04. | |
| Lewis B hexasaccharide-sp-biotin | Lewis B hexasaccharide-sp-biotin. | |
| Lewis b tetrasaccharide-Biotin | Lewis b tetrasaccharide-Biotin, a modified oligosaccharide, is frequently employed in the analysis of carbohydrate-protein recognition. Its primary application is in discerning the Lewis b antigen- a heavily implicated facet of cancer cell metastasis and movement. With an ability to form part of diagnostic assays for identifying the corresponding antigen in patient serum or plasma, it holds great potential in furthering cancer research. Synonyms: α-Fuc[1→2]-β-Gal-[1→3]-α-Fuc-[1→4]-GlcNAc-biotin. Molecular formula: C39H66N4O21S. Mole weight: 959.02. | |
| Lewis B tetrasaccharide-sp-biotin | Lewis B tetrasaccharide-sp-biotin is an indubitable compound, adroitly employed for the intricate examination and detection of Lewis B antigens residing within biological specimens. Synonyms: Fuc-a-1,2-Gal-b-1,3-(Fuc-a-1,4)GlcNAc-O(CH2)3NHCO(CH2)5NH-biotin. CAS No. 870891-31-9. Molecular formula: C45H77N5O22S. Mole weight: 1072.18. | |
| Lewis X-PAA-biotin | Lewis X-PAA-biotin. | |
| Lewis X trisaccharide-sp-biotin | Lewis X trisaccharide-sp-biotin is a biotinylated derivative of Lewis X trisaccharide, representing an essential carbohydrate structure profoundly implicated in numerous vital biological phenomena. In the realm of biomedical exploration, it serves as an indispensable tool to scrutinize intricate carbohydrate-protein interactions, with a specific focus on selectins. Molecular formula: C39H67N5O18S. Mole weight: 926.04. | |
| Lewis Y-NHCOCH2NH-biotin | Lewis Y-NHCOCH2NH-biotin is a novel biomedicine with high affinity and stability used for targeted drug delivery in cancer therapy. This product specifically binds to Lewis Y antigen overexpressed in various malignancies, facilitating the selective delivery of anticancer drugs. Molecular formula: C38H63N5O21S. Mole weight: 957.99. | |
| Lewis Y-O-(CH2)8-biotin | Lewis Y-O-(CH2)8-biotin. | |
| Lewis Y-PAA-biotin | Lewis Y-PAA-biotin. | |
| Lewis Y pentasaccharide-sp-biotin | Lewis Y pentasaccharide-sp-biotin is a biomedical product used in the research of various cancers, including breast, lung and ovarian cancer. It functions as a targeted therapy by selectively binding to Lewis Y antigens overexpressed on cancer cells, inhibiting their growth. Molecular formula: C55H92N8O29S. Mole weight: 1361.42. | |
| Lewis Y tetrasaccharide-sp-biotin | Lewis Y tetrasaccharide-sp-biotin is a specialized biotin conjugate used in the biomedical industry. It has potential applications in targeted drug delivery and diagnostics for Lewis Y antigen-expressing cancer cells. This product enables specific binding to Lewis Y antigens, facilitating the research of diseases such as breast, lung and colon cancers. Synonyms: Fuc-a-1,2-Gal-b-1,4(Fuc-a-1,3)GlcNAc-O(CH2)3NHCO(CH2)5NH-biotin. CAS No. 870891-90-0. Molecular formula: C45H77N5O22S. Mole weight: 1072.18. | |
| L-Glutamic acid-[1,2-13C2] | L-Glutamic acid-[1,2-13C2] is a labelled L-Glutamic acid. Glutamic acid is a non-essential amino acid that acts as an excitatory neurotransmitter in the CNS. Synonyms: (2R)-2-aminopentanedioic acid-13C2. Grade: 98% by HPLC; 99% atom 13C. Molecular formula: C3[13C]2H9NO4. Mole weight: 149.11. | |
| L-Glutamic acid dimethyl ester hydrochloride | L-Glutamic Acid Dimethyl Ester is a diester analogue of L-Glutamic Acid, a non-essential amino acid. L-Glutamic Acid Dimethyl Ester has been shown to antagonize the effects of morphine sulfate. Synonyms: H-Glu(OMe)-OMe.HCl; Dimethyl L-Glutamate Hydrochloride; (S)-Dimethyl 2-Aminopentanedioate Hydrochloride. Grade: ≥ 98% (HPLC). CAS No. 23150-65-4. Molecular formula: C7H14ClNO4. Mole weight: 211.64. | |
| L-Glutamic acid γ-(p-nitroanilide) hydrochloride | L-Glutamic acid γ-(p-nitroanilide) hydrochloride is a potent and selective inhibitor of the glutamine transporter ASCT2(SLC1A5) with Ki of 55 μM. Synonyms: L-Glu(PNA)-OH HCl; L-γ-Glutamyl-4-nitroanilide hydrochloride; UNII-7FHH4FVM3N; GPNA (hydrochloride); N5-(4-Nitrophenyl)-L-glutamine hydrochloride; N-(4-Nitrophenyl)-L-glutamine monohydrochloride; L-gamma-Glutamyl-p-nitroanilide hydrochloride; L-Glutamic acid gamma-(p-nitroanilide) hydrochloride; L-2-Amino-4'-nitroglutaranilic acid hydrochloride; (2S)-2-amino-5-(4-nitroanilino)-5-oxopentanoic acid hydrochloride. Grade: ≥ 99% (HPLC). CAS No. 67953-08-6. Molecular formula: C11H13N3O5·HCl. Mole weight: 303.70. | |
| LGnRH-III, lamprey | LGnRH-III, lamprey, a GnRH isoform isolated from the sea lamprey, is a weak GnRH receptor agonist with anti-tumor activity. Synonyms: Lamprey Gonadotropin Releasing Hormone (LGnRH)-III; Peforelin; H-Pyr-His-Trp-Ser-His-Asp-Trp-Lys-Pro-Gly-NH2; L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-histidyl-L-alpha-aspartyl-L-tryptophyl-L-lysyl-L-prolyl-glycinamide; 5-Oxo-L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-histidyl-L-alpha-asparagyl-L-tryptophyl-L-lysyl-L-prolylglycinamide; GnRH3, lamprey. Grade: ≥98%. CAS No. 147859-97-0. Molecular formula: C59H74N18O14. Mole weight: 1259.33. | |
| LGnRH-III, lamprey acetate | LGnRH-III, lamprey acetate, a GnRH isoform isolated from the sea lamprey, is a weak GnRH receptor agonist with anti-tumor activity. It is an evolutionarily conserved member of the GnRH family and can stimulate the secretion of gonadotropins, luteinizing, and follicle-stimulating hormones. Synonyms: H-Pyr-His-Trp-Ser-His-Asp-Trp-Lys-Pro-Gly-NH2.CH3CO2H; L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-histidyl-L-alpha-aspartyl-L-tryptophyl-L-lysyl-L-prolyl-glycinamide acetate. Grade: ≥95%. Molecular formula: C61H78N18O16. Mole weight: 1319.38. | |
| L-Homoarginine | L-homoarginine is a non-essential and non-proteinogenic amino acid, and acts as a competitive substrate for nitric oxide synthase (NOS), whereas asymmetric dimethylarginine (ADMA) is a NOS inhibitor. It is also a human arginase inhibitor. Synonyms: L-Lysine, N6-(aminoiminomethyl)-; Lysine, N6-amidino-; Lysine, N6-amidino-, L-; N6-(Aminoiminomethyl)-L-lysine; Homo-L-arginine; Homoarginine; NSC 27429; NSC 88868; N6-carbamimidoyl-L-lysine. Grade: ≥95%. CAS No. 156-86-5. Molecular formula: C7H16N4O2. Mole weight: 188.23. | |
| L-Homoarginine hydrochloride | L-Homoarginine is an alkaline phosphatase inhibitor found in blood, cerebrospinal fluid (CSF), and urine, as well as in human intestine and testes tissues. L-Homoarginine also acts as a substrate of CAT1, CAT2A and CAT2B, and CAT1 is a key site with regard to physiological relevance and interactions with related substrates such as L-arginine. Synonyms: NSC 145416; (S)-2-Amino-6-guanidinohexanoic acid hydrochloride. Grade: ≥95%. CAS No. 1483-01-8. Molecular formula: C7H16N4O2·HCl. Mole weight: 224.7. | |
| L-Homocystine | L-Homocystine is a cardiovascular risk factor in prediction of coronary heart disease as well as being associated with congenital birth defects, pregnancy complications and cancer. Synonyms: (2S,2'S)-4,4'-Dithiobis[2-aminobutanoic Acid]; [S-(R*,R*)]-4,4'-Dithiobis[2-aminobutanoic Acid]; L-4,4'-Dithiobis[2-aminobutyric Acid]. Grade: ≥ 99% (Assay). CAS No. 626-72-2. Molecular formula: C8H16N2O4S2. Mole weight: 268.35. | |
| L-Homoserine | An impurity of Cobicistat, a cytochrome P450 3A (CYP3A) inhibitor used for the treatment of HIV/AIDS infection. Synonyms: L-HomoSer-OH; L-2-Amino-4-hydroxybutyric acid; (S)-2-Amino-4-hydroxybutyric acid; Butyric acid, 2-amino-4-hydroxy-, L-; (S)-2-Amino-4-hydroxybutanoic acid; (S)-Homoserine; Butanoic acid, 2-amino-4-hydroxy-, (S)-; Homoserine; NSC 206251. Grade: ≥95%. CAS No. 672-15-1. Molecular formula: C4H9NO3. Mole weight: 119.12. | |
| LHRH (1-5) (free acid) | LHRH (1-5) (free acid), a metabolite of GnRH, may be involved in regulating the synthesis, secretion and function of natural hormones. In addition, it may be involved in regulating cell migration. Synonyms: Pyr-His-Trp-Ser-Tyr; 5-Oxo-L-prolyl-L-histidyl-L-tryptophyl-L-Seryl-L-tyrosine; LHRH (1-5); L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosine; H-Pyr-His-Trp-Ser-Tyr-OH; L-Tyrosine, 5-oxo-L-prolyl-L-histidyl-L-tryptophyl-L-seryl-; (3S,6S,9S,12S)-3-((1H-imidazol-4-yl)methyl)-6-((1H-indol-3-yl)methyl)-12-(4-hydroxybenzyl)-9-(hydroxymethyl)-1,4,7,10-tetraoxo-1-((S)-5-oxopyrrolidin-2-yl)-2,5,8,11-tetraazatridecan-13-oic acid; pEHWSY; L-Tyrosine, N-[N-[N-[N-(5-oxo-L-prolyl)-L-histidyl]-L-tryptophyl]-L-seryl]-. Grade: 95%. CAS No. 52434-75-0. Molecular formula: C34H38N8O9. Mole weight: 702.71. | |
| LHRH (chicken) | It is a luteinizing hormone-releasing hormone (LHRH) that stimulates the anterior pituitary to release gonadotropins, thereby regulating reproductive function. Synonyms: H-Pyr-His-Trp-Ser-Tyr-Gly-Leu-Gln-Pro-Gly-NH2; L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-glycyl-L-leucyl-L-glutaminyl-L-prolyl-glycinamide; [Gln8]-C517 (LH-RH), chicken; 8-Glutamine-LHRH; GNRH, Chicken I; 8-Gln-LHRH; LHRH-I; pGlu-His-Trp-Ser-Tyr-Gly-Leu-Gln-Pro-Gly-NH2. Grade: 95%. CAS No. 47922-48-5. Molecular formula: C54H71N15O14. Mole weight: 1154.23. | |
| LHRH (free acid) | LHRH (free acid), also known as Luteinizing Hormone-Releasing Hormone free acid, is a neuropeptide that plays a crucial role in regulating reproduction. This hormone is secreted by the hypothalamus and acts on the anterior pituitary gland to stimulate the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are essential for reproductive functions. Synonyms: Glp-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly; H-Pyr-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-OH; 10-Glycine-luteinizing hormone-releasing factor (swine); 10-Glycine-luteinizing hormone-releasing factor (pig); 10-Glycine-LH-RH; [Gly-OH10]-LHRH; LH-RH(OH); LHRH acid; PGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly; LHRH free acid; L-Pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-glycyl-L-leucyl-L-arginyl-L-prolyl-glycine; XHWSYGLRPG. Grade: ≥95%. CAS No. 35263-73-1. Molecular formula: C55H74N16O14. Mole weight: 1183.27. | |
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