A directory of where to buy chemicals in the USA, including: distributors, industrial manufacturers, bulk supplies and wholesalers of raw ingredients & finished goods.
DL-Glutamic Acid-[2,4,4-d3] is a labelled DL-Glutamic Acid. Glutamic acid is an α-amino acid in the class of non-essential amino acids. The glutamate neurotransmitter form is effective in the neural activation. Synonyms: DL-Glutamic-2,4,4-d3 Acid; (±)-2-Aminoglutaric Acid-d3; H-DL-Glu-OH-d3. Grade: 95% by HPLC; 98% atom D. CAS No. 96927-56-9. Molecular formula: C5H6D3NO4. Mole weight: 150.15.
DL-Glutamic acid-[3-13C]
DL-Glutamic acid-[3-13C] is a labelled DL-Glutamic acid. Glutamic acid is a non-essential amino acid that acts as an excitatory neurotransmitter in the CNS. Grade: 98% by HPLC; 99% atom 13C. CAS No. 206983-94-0. Molecular formula: C4[13C]H9NO4. Mole weight: 148.12.
DL-Glutamic acid-[3,3-d2]
DL-Glutamic acid-[3,3-d2]. Synonyms: DL-Glutamic acid-3,3-d2. Grade: 98% atom D. CAS No. 53931-70-7. Molecular formula: C5H7D2NO4. Mole weight: 149.14.
DL-Glutamic acid-[5-13C]
DL-Glutamic acid-[5-13C] is a labelled DL-Glutamic acid. Glutamic acid is a non-essential amino acid that acts as an excitatory neurotransmitter in the CNS. Synonyms: 2-Aminopentanedioic acid-5-13C. Grade: 95% by HPLC; 99% atom 13C. CAS No. 95388-01-5. Molecular formula: C4[13C]H9NO4. Mole weight: 148.12.
Dl-glutamic acid gamma-anilide
Dl-glutamic acid gamma-anilide. Uses: Designed for use in research and industrial production. Additional or Alternative Names: DL-Glutamic acid gamma-anilide, 4337-38-6, AC1NM0GI, AGN-PC-01YQSS, SureCN2522620, DL-Glutamic acid |A-anilide, G1628_SIGMA, CTK8F9291, 2-amino-5-anilino-5-oxopentanoic acid, AG-L-65457, FT-0635237, (2S)-2-amino-5-anilino-5-oxopentanoic acid. Product Category: Heterocyclic Organic Compound. CAS No. 4337-38-6. Molecular formula: C11H14N2O3. Mole weight: 222.24. Purity: 0.96. IUPACName: 2-amino-5-anilino-5-oxopentanoic acid. Canonical SMILES: C1=CC=C(C=C1)NC(=O)CCC(C(=O)O)N. Product ID: ACM4337386. Alfa Chemistry ISO 9001:2015 Certified.
DL-Glutamic acid g-methyl ester. Group: Biochemicals. Grades: Reagent Grade. Pack Sizes: 1g, 5g, 25g, 100g. US Biological Life Sciences.
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DL-Glutamic acid g-tert-butyl ester
DL-Glutamic acid g-tert-butyl ester. Group: Biochemicals. Grades: Reagent Grade. Pack Sizes: 1g, 5g, 25g. US Biological Life Sciences.
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DL-Glutamic acid hydrate
DL-Glutamic acid (hydrate) is a kind of biological materials or organic compounds that are widely used in life science research [1]. Uses: Scientific research. Group: Biochemical assay reagents. CAS No. 19285-83-7. Pack Sizes: 25 g; 100 g. Product ID: HY-W010108.
BioReagent, suitable for cell culture. Group: Fluorescence/luminescence spectroscopy.
DL-Glutamic Acid Monohydrate (DL-Glu-OH), 99+%
Glutamic acid is a non-essential amino acid that is also an excitatory amino acid (EAA) because of its role in neurotransmission.1 Its name derives from its historical isolation from wheat gluten. A detailed review of the chemistry of glutamic acid has been published. 2DL-Glutamic acid has been used as an energy source in the isolation of cultured Thiobacillus acidophilus.3 It has been utilized as a supplement in the diet of chicks and been shown to lead to grown depression.4 DL-Glutamic acid has been utilized as a nitrogen source for the culture of nematode eggs from Arkansas Fungus 18 (ARF18) and Pochonia chlamydospora var. chlamydospora.5A method for the analysis of DL-glutamic acid and other amino acids via copper(II) ion, hydrogen peroxide, and pyrocathechol violet has been published.6 The resolution of DL-glutamic acid as its acetyl derivative through the use of porcine renal acylase I has been reported.2DLGlutamic acid has been used as a starting material for the synthesis of imidazo[1,5-a]quinoxaline amides and carbamates that bind with high affinity to the GABAA/benzodiazepine receptor in culturedSf 9 cells.7. Group: Biochemicals. Alternative Names: DL-Glu-OH·H2O; (RS)-2-Aminopentanedioic acid monohydrate; DL-glutaminic acid, DL-α-aminoglutaric acid; DL-1-aminopropane-1,3-dicarboxylic acid. Grades: Highly Purified. CAS No. 19285-83-7. Pack Sizes: 100g, 500g, 1Kg. Molecular Formula: C5H9NO4 H2O, Molecular Weight: 165.15. US Biological Life Sciences.
DL-glutamIne. Group: Biochemicals. Grades: Highly Purified. CAS No. 585-21-7. Pack Sizes: 5g, 10g, 25g, 50g, 100g. US Biological Life Sciences.
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DL-Glutamine
DL-Glutamine is an unnatural amino acid and could be used for general biochemical research and drug synthesis. Uses: Dl-glutamine is an unnatural amino acid and could be used for general biochemical research and drug synthesis. Synonyms: H-DL-Gln-OH. Grade: 95%. CAS No. 6899-4-3. Molecular formula: C5H10N2O3. Mole weight: 146.14.
DL-Glutamine
DL-Glutamine is used for biochemical research and drug synthesis. Uses: Designed for use in research and industrial production. Additional or Alternative Names: Glutamine;Glutamine DL-form;Pentanoic acid, 2,5-diamino-5-oxo-. Product Category: Inhibitors. CAS No. 6899-4-3. Molecular formula: C5H10N2O3. Mole weight: 146.14. Purity: ≥98.0%. Product ID: ACM6899043-1. Alfa Chemistry ISO 9001:2015 Certified. Categories: D-glutamine amidohydrolase.
DL-Glutamine
DL-Glutamine is used for biochemical research and drug synthesis. Uses: Scientific research. Group: Natural products. Alternative Names: (±)-Glutamine; DL-Gl. CAS No. 6899-4-3. Pack Sizes: 10 mM * 1 mL; 100 mg. Product ID: HY-B1346.
DL-Glutaryl Carnitine
Introducing DL-Glutaryl Carnitine is an esteemed biomedical creation meticulously used for developing the remediation of carnitine deficiency. Its ingenious capacity to facilitate the swift conveyance of protracted fatty acids deep into the mitochondria, ignites an extraordinary process of energy generation. Synonyms: 1-Propanaminium, 3-carboxy-2-(4-carboxy-1-oxobutoxy)?-N,?N,?N-trimethyl-, inner salt, (2R)?-. Grade: > 95%. CAS No. 102636-82-8. Molecular formula: C12H21NO6. Mole weight: 275.3.
DL-Glyceraldehyde-[1,2-13C2] is an isotope form of Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolite of dietary fructose. Synonyms: DL-[1,2-13C2]glyceraldehyde; (±)-2,3-Dihydroxypropanal-1,2-13C; 2,3-Dihydroxypropanal-1,2-13C; 2,3-Dihydroxypropionaldehyde-1,2-13C. CAS No. 478529-51-0. Molecular formula: C[13C]2H6O3. Mole weight: 92.06.
DL-Glyceraldehyde-[1,2,3-13C3] is an isotope form of Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolite of dietary fructose. Synonyms: (±)-2,3-Dihydroxypropanal-1,2,3-13C; 2,3-Dihydroxypropanal-1,2,3-13C; 2,3-Dihydroxypropionaldehyde-1,2,3-13C; DL-Glyceraldehyde-1,2,3-13C; DL-Glyceric aldehyde-1,2,3-13C; Glyceraldehyde-1,2,3-13C; Glyceric Aldehyde-1,2,3-13C. CAS No. 478529-56-5. Molecular formula: [13C]3H6O3. Mole weight: 93.06.
DL-Glyceraldehyde-[1,2,3,3'-d4]
DL-Glyceraldehyde-[1,2,3,3'-d4] is the labelled analogue of DL-Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolites of dietary fructose. It is a substrate for the enzyme aldose reductase. Synonyms: DL-[1,2,3,3'-2H4]glyceraldehyde; DL-[1,2,3,3'-2H4]2,3-dihydroxypropanal; DL-glyceraldehyde-1,2,3,3-d4; (±)-2,3-Dihydroxy-propanal-1,2,3,3-d4; (±)-Glyceraldehyde-1,2,3,3-d4; 2,3-Dihydroxypropanal-1,2,3,3-d4; 2,3-Dihydroxypropionaldehyde-1,2,3,3-d4; α,β-Dihydroxypropionaldehyde-1,2,3,3-d4. CAS No. 478529-62-3. Molecular formula: C3H2D4O3. Mole weight: 94.10.
DL-Glyceraldehyde-[1,3-13C2]
DL-Glyceraldehyde-[1,3-13C2] is an isotope form of Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolite of dietary fructose. Synonyms: (±)-2,3-Dihydroxypropanal-1,3-13C; 2,3-Dihydroxypropanal-1,3-13C; 2,3-Dihydroxypropionaldehyde-1,3-13C; DL-Glyceraldehyde-1,3-13C; DL-Glyceric aldehyde-1,3-13C; Glyceraldehyde-1,3-13C; Glyceric Aldehyde-1,3-13C; Glycerinaldehyde-1,3-13C. CAS No. 478529-53-2. Molecular formula: C[13C]2H6O3. Mole weight: 92.06.
DL-Glyceraldehyde-[1-d] is the labelled analogue of DL-Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolites of dietary fructose. It is a substrate for the enzyme aldose reductase. Synonyms: DL-Glyceraldehyde-1-d; (±)-2,3-Dihydroxypropanal-1-d; 2,3-Dihydroxypropanal-1-d; 2,3-Dihydroxypropionaldehyde-1-d; DL-Glyceric aldehyde-1-d; Glyceraldehyde-1-d; Glyceric Aldehyde-1-d; Glycerinaldehyde-1-d; Glycerose-1-d; NSC 67934-1-d; α,β-Dihydroxypropionaldehyde-1-d; DL-[1-2H]glyceraldehyde; DL-[1-2H]2,3-dihydroxypropanal. Grade: ≥90%. CAS No. 72599-69-0. Molecular formula: C3H5DO3. Mole weight: 91.08.
DL-Glyceraldehyde-[2-13C] is an isotope form of Glyceraldehyde, which is the simplest of all aldoses and has been shown to be the one of the carbonyl metabolite of dietary fructose. Synonyms: DL-[2-13C]glyceraldehyde. CAS No. 71122-43-5. Molecular formula: C2[13C]H6O3. Mole weight: 91.07.
DL-Glyceraldehyde 3-phosphate
DL-Glyceraldehyde 3-phosphate is an intermediate in several metabolic pathways, including glycolysis and gluconeogenesis. DL-Glyceraldehyde 3-phosphate is a potent inhibitor of the growth of E. coli. DL-Glyceraldehyde 3-phosphate is a competitive inhibitor of the acyltransferase [1] [2]. Uses: Scientific research. Group: Natural products. CAS No. 591-59-3. Pack Sizes: 5 mg (294 mM * 100 μL in Water); 10 mg (294 mM * 200 μL in Water). Product ID: HY-113054.
DL-Glyceraldehyde 3-phosphate diethyl acetal barium salt
45-55 mg/mL in H2O. Group: Fluorescence/luminescence spectroscopy.
DL-Glyceraldehyde dimer
DL-Glyceraldehyde dimer. Group: Biochemicals. Grades: Reagent Grade. CAS No. 26793-98-6. Pack Sizes: 1g, 5g. US Biological Life Sciences.
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DL-Glyceraldehyde, dimer
DL-Glyceraldehyde, dimer. Group: Biochemicals. Alternative Names: 3,6-Dihydroxy-1,4-dioxane-2,5-dimethanol. Grades: Highly Purified. CAS No. 23147-59-3,26793-98-6. Pack Sizes: 1g, 2g, 5g, 10g, 25g. Molecular Formula: C6H12O6. US Biological Life Sciences.
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D/L-glyceraldehyde reductase
The enzyme takes part in a D-galacturonate degradation pathway in the fungi Aspergillus niger and Trichoderma reesei (Hypocrea jecorina). It has equal activity with D- and L-glyceraldehyde, and can also reduce glyoxal and methylglyoxal. The reaction is only observed in the direction of glyceraldehyde reduction. Group: Enzymes. Synonyms: gld1 (gene name); gaaD (gene name). Enzyme Commission Number: EC 1.1.1.372. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0290; D/L-glyceraldehyde reductase; EC 1.1.1.372; gld1 (gene name); gaaD (gene name). Cat No: EXWM-0290.
DL-Glyceric acid
DL-Glyceric acid. Group: Biochemicals. Grades: Highly Purified. CAS No. 473-81-4. Pack Sizes: 10g, 25g, 50g, 100g, 250g. Molecular Formula: C3H6O4. US Biological Life Sciences.
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DL-Glyceric Acid (20% in water)
DL-Glyceric Acid is a compound that is secreted excessively in the urine by patients suffering from D-glyceric aciduria. Uses: Scientific research. Group: Natural products. Alternative Names: Glyceric Acid (20% in Water,ca.2 mol/L). CAS No. 473-81-4. Pack Sizes: 500 mg (1.9 M * 2.5 mL in Water); 1 g (1.9 M * 5 mL in Water). Product ID: HY-W018035.
DL-Goitrin
DL-Goitrin. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 5-Ethenyl-2-oxazolidinethione; (±)-Goitrin; 5-Vinyl-2-oxazolidine-2-thione; 5-Vinyl-2-oxazolidinethione. CAS No. 13190-34-6. Molecular formula: C5H7NOS. Mole weight: 129.18. Product ID: ACM13190346. Alfa Chemistry ISO 9001:2015 Certified.
dl-Grepafloxacin
dl-Grepafloxacin. Group: Biochemicals. Alternative Names: 1-Cyclopropyl-6-fluoro-7-(3-methyl-1-piperazinyl)-5-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid; Grepafloxacin; Tomefloxacin. Grades: Highly Purified. CAS No. 119914-60-2. Pack Sizes: 10mg. Molecular Formula: C19H22FN3O3, Molecular Weight: 359.39. US Biological Life Sciences.
Worldwide
DL-Grepafloxacin Hydrochloride
DL-Grepafloxacin Hydrochloride is an antibacterial compound used to treat a variety of respiratory infections. Synonyms: 1-Cyclopropyl-6-fluoro-7-(3-methyl-1-piperazinyl)-5-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic Acid Hydrochloride; Grepafloxacin Hydrochloride; Tomefloxacin Hydrochloride; dl-Grepafloxacin Hydrochloride. Grade: ≥95%. Molecular formula: C19H22FN3O3.xHCl. Mole weight: 359.39 (free base).
DL-Histidine
25g Pack Size. Group: Amino Acids. Formula: C6H9N3O2. CAS No. 4998-57-6. Prepack ID 90028503-25g. Molecular Weight 155.15. See USA prepack pricing.
DL-Histidine
DL-Histidine. Uses: Dl-histidine has been used to study the fouling behaviour of polyethersulfone ultrafiltration membranes made with different pvp (polyvinylpyrrolidone). Additional or Alternative Names: (±)-2-Amino-3-(4-imidazolyl)propionic acid. Product Category: Amino Acids. CAS No. 4998-57-6. Mole weight: 155.15. Canonical SMILES: NC(Cc1c[nH]cn1)C(O)=O. ECNumber: 225-660-9. Product ID: ACM4998576-1. Alfa Chemistry ISO 9001:2015 Certified.
DL-Histidine. Group: Biochemicals. Alternative Names: DL-His-OH. Grades: Highly Purified. CAS No. 4998-57-6. Pack Sizes: 25g, 50g, 100g, 250g. US Biological Life Sciences.
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DL-Histidine
DL-Histidine is a histidine derivative [1]. Uses: Scientific research. Group: Peptides. CAS No. 4998-57-6. Pack Sizes: 100 g; 500 g. Product ID: HY-W010209.
DL-Histidine, 99%
DL-Histidine, 99%. Group: Biochemicals. Alternative Names: DL-a-Amino-ß-imidazolepropionicacid . Grades: Highly Purified. CAS No. 4998-57-6. Pack Sizes: 100g. US Biological Life Sciences.
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DL-Histidine-[α-15N]
DL-Histidine-[α-15N] is a labelled DL-Histidine. Histidine is an α-amino acid used in the biosynthesis of proteins. Histidine is essential for humans that is metabolized to histamine. Synonyms: (±)-α-Amino-β-(4-imidazoyl)propionic Acid-15N; H-DL-His-OH-15N. Grade: 95% by HPLC; 98% atom 15N. CAS No. 287484-37-1. Molecular formula: C6H9[15N]N2O2. Mole weight: 156.16.
DL-Histidine-[alpha-15N] 2HCl
DL-Histidine-[alpha-15N] 2HCl is a labelled salt of DL-Histidine. Histidine is an α-amino acid used in the biosynthesis of proteins. Histidine is essential for humans that is metabolized to histamine. Grade: 98% by HPLC; 98% atom 15N. Molecular formula: C6H11Cl2N2[15N]O2. Mole weight: 229.07.
DL-Histidine-α,β,β-d3
DL-Histidine-α,β,β-d3 is a labelled DL-Histidine. Histidine is an α-amino acid used in the biosynthesis of proteins. Histidine is essential for humans that is metabolized to histamine. Synonyms: (±)-α-Amino-β-(4-imidazoyl)propionic Acid-d3; H-DL-His-OH-d3; 2-amino-2,3,3-trideuterio-3-(1H-imidazol-5-yl)propanoic acid. Grade: 95% by HPLC; 98% atom D. CAS No. 344299-50-9. Molecular formula: C6H6D3N3O2. Mole weight: 158.17.
DL-Histidine HCI monohydrate
DL-Histidine HCI monohydrate. Group: Biochemicals. Alternative Names: DL-a-Amino-b-(4-imidazolyl)propionic acid monohydrochloride. Grades: Highly Purified. CAS No. 123333-71-1. Pack Sizes: 100g, 250g, 500g, 1kg, 2kg. Molecular Formula: C6H9N3O2·HCl·H2O. US Biological Life Sciences.
Dl-histidine monohydrochloride. Uses: Designed for use in research and industrial production. Additional or Alternative Names: DL-HISTIDINE MONOHYDROCHLORIDE;dl-histidineHCl1-hydrate;DL-Histidine hydrochloride, monohydrate,98%;DL-Histidine hydrochloride. Product Category: Heterocyclic Organic Compound. Appearance: white crystals. CAS No. 6459-59-2. Molecular formula: C6H9N3O2?HCl. Mole weight: 191.61. Purity: 0.96. IUPACName: 2-amino-3-(1H-imidazol-5-yl)propanoic acid hydrochloride. Product ID: ACM6459592. Alfa Chemistry ISO 9001:2015 Certified.
DL-Histidine-[ring-15N2]
DL-Histidine-[ring-15N2] is a labelled DL-Histidine. Histidine is an α-amino acid used in the biosynthesis of proteins. Histidine is essential for humans that is metabolized to histamine. Synonyms: DL-Histidine-1,3-15N2. Grade: 98% by HPLC; 98% atom 15N. Molecular formula: C6H9[15N]2NO2. Mole weight: 157.14.
DL-Histidine-[ring-2-13C]
DL-Histidine (RING-2-13C) is a labelled DL-Histidine. Histidine is an α-amino acid used in the biosynthesis of proteins. Histidine is essential for humans that is metabolized to histamine. Synonyms: DL-histidine (ring-2-13C). Grade: 98% by CP; 99% atom 13C. CAS No. 2483735-59-5. Molecular formula: C5[13C]H9N3O2. Mole weight: 156.15.
DL-Homatropine hydrobromide
5g Pack Size. Group: Biochemicals, Organics, Research Organics & Inorganics. Formula: C16H21NO3 ·HBr. CAS No. 51-56-9. Prepack ID 14661549-5g. Molecular Weight 356.25. See USA prepack pricing.
DL-Homocysteic acid
DL-Homocysteic acid. Group: Biochemicals. Alternative Names: DL-2-Amino-4-sulphobutyric acid. Grades: Highly Purified. CAS No. 504-33-6. Pack Sizes: 5g, 10g, 25g, 50g, 100g. US Biological Life Sciences.
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DL-Homocysteic Acid-[3,3,4,4-d4] monohydrate
DL-Homocysteic Acid-[3,3,4,4-d4] monohydrate is a labelled DL-Homocysteic acid. Homocysteic acid is a metabolite of homocysteine and an agonist of NMDA receptor. Synonyms: DL-Homocysteic-3,3,4,4-d4 Acid H2O; (±)-2-Amino-4-sulfobutyric Acid-d4 H2O. Grade: 95% by HPLC; 98% atom D. CAS No. 157203-91-3. Molecular formula: C4H7D4NO6S. Mole weight: 187.21.
DL-Homocysteic acid ≥97% (TLC)
DL-Homocysteic acid ≥97% (TLC). Group: Biochemicals. Grades: Reagent Grade. CAS No. 504-33-6. Pack Sizes: 1g, 5g, 25g, 100g. US Biological Life Sciences.
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DL-Homocysteine
DL-Homocysteine. Uses: Dl-homocysteine has been used to induce hyperhomocysteinemia in sprague-dawley rats. it has also been used to study the effects of hyperhomocysteinemia on atherosclerosis in apolipoprotein e-deficient mice. Additional or Alternative Names: 2-Amino-4-mercaptobutyric acid. Product Category: Amino Acids. Appearance: White to off-white solid. CAS No. 454-29-5. Molecular formula: HSCH2CH2CH(NH2)COOH. Mole weight: 135.18. Purity: 0.9. IUPACName: 2-Amino-4-sulfanylbutanoic acid. Canonical SMILES: NC(CCS)C(O)=O. Density: 1.149 g/cm³. ECNumber: 207-222-9. Product ID: ACM454295-1. Alfa Chemistry ISO 9001:2015 Certified.
DL-Homocysteine
DL-Homocysteine is an allosteric antagonist of the dopamine D2 receptor. Synonyms: (±)-Homocysteine; NSC 206252; 2-Amino-4-mercaptobutyric acid; Butyric acid, 2-amino-4-mercapto-, DL-; Butanoic acid, 2-amino-4-mercapto-; DL-2-amino-4-mercaptobutyric acid. Grade: 90%. CAS No. 454-29-5. Molecular formula: C4H9NO2S. Mole weight: 135.18.
DL-Homocysteine
analytical standard. Group: Amino acid, peptide & protein standards.
DL-Homocysteine
DL-Homocysteine. Group: Biochemicals. Alternative Names: 2-Amino-4-mercaptobutyric acid. Grades: Highly Purified. CAS No. 454-29-5. Pack Sizes: 1g, 2g, 5g, 10g, 25g. Molecular Formula: C4H9NO2S. US Biological Life Sciences.
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DL-Homocysteine
DL-Homocysteine is a weak neurotoxin, and can affect the production of kynurenic acid in the brain. DL-Homocysteine is correlated with Vitamin B12, renal functions and folate levels, affects the cross-sectional cognition indirectly through white matter microstructural integrity [2]. Uses: Scientific research. Group: Natural products. CAS No. 454-29-5. Pack Sizes: 10 mM * 1 mL; 100 mg. Product ID: HY-W040821.
DL-Homocysteine-[3,3,4,4-d4]
DL-Homocysteine-[3,3,4,4-d4] is a labelled DL-Homocysteine. DL-Homocysteine is an α-amino acid in the class of non-proteinogenic amino acids, which is biosythesized from methionine. Synonyms: DL-2-Amino-4-mercaptobutyric Acid-d4; DL-Homocysteine-d4. Grade: ≥95%. CAS No. 416845-90-4. Molecular formula: C4H5D4NO2S. Mole weight: 139.21.