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1- ( (2S, 3S, 5S, 8R, 9S, 10S, 13S, 14S, 16S, 17R) -17-Acetoxy-2- (N- (2- (formyloxy) ethyl) formamido) -3-hydroxy-10, 13-dimethylhexadecahydro-1H-cyclopenta [a]phenanthren-16-yl) -1-allylpyrrolidin-1-ium Bromide is an impurity of Rocuronium Bromide (R639500); an aminosteroid and competitive neuromuscular blocker. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 10mg, 25mg. Molecular Formula: C32H51BrN2O6, Molecular Weight: 639.66. US Biological Life Sciences.
Worldwide
2-(2-Formamido-4-thiazolyl)glyoxylic Acid Hydrate
2-(2-Formamido-4-thiazolyl)glyoxylic Acid is used as a reagent in the synthesis of cephalosporins which are a class of beta-lactam antibiotics which are active against gram-positive and potentially against gram-negative bacteria. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 50mg, 100mg. Molecular Formula: C6H4N2O4S xH2O. US Biological Life Sciences.
Worldwide
2-Amino-4-formamidobenzenesulfonic acid
Heterocyclic Organic Compound. Alternative Names: 2-amino-4-formamidobenzenesulfonic acid. CAS No. 116293-77-7. Molecular formula: C7H8N2O4S. Mole weight: 216.21442. Catalog: ACM116293777.
Desmethyl formamido pirimicarb is an impurity of pirimicarb. Pirimicarb is a selective carbamate insecticide used to control aphids on vegetable, cereal and orchard crops by inhibiting acetylcholinesterase activity but does not affect useful predators such as ladybirds that eat them. Synonyms: Pirimicarb II. CAS No. 27218-04-8. Molecular formula: C11H16N4O3. Mole weight: 252.27.
Diethyl (6-Chloro-2-indolylmethyl) formamido-malonate. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences.
Worldwide
DNA-formamidopyrimidine glycosylase
May play a significant role in processes leading to recovery from mutagenesis and/or cell death by alkylating agents. Also involved in the GO system responsible for removing an oxidatively damaged form of guanine (7,8-dihydro-8-oxoguanine) from DNA. Group: Enzymes. Synonyms: Fapy-DNA glycosylase; deoxyribonucleate glycosidase; 2,6-diamino-4-hydroxy-5N-formamidopyrimidine-DNA glycosylase; 2,6-diamino-4-hydroxy-5(N-methyl)formamidopyrimidine-DNA glycosylase; formamidopyrimidine-DNA glycosylase; DNA-formamidopyrimidine glycosidase; Fpg protein. Enzyme Commission Number: EC 3.2.2.23. CAS No. 78783-53-6. Fpg Protein. 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-3977; DNA-formamidopyrimidine glycosylase; EC 3.2.2.23; 78783-53-6; Fapy-DNA glycosylase; deoxyribonucleate glycosidase; 2,6-diamino-4-hydroxy-5N-formamidopyrimidine-DNA glycosylase; 2,6-diamino-4-hydroxy-5(N-methyl)formamidopyrimidine-DNA glycosylase; formamidopyrimidine-DNA glycosylase; DNA-formamidopyrimidine glycosidase; Fpg protein. Cat No: EXWM-3977.
Methyl 3-formamido-4-hydroxybenzoate
Methyl 3-formamido-4-hydroxybenzoate. Group: Biochemicals. Grades: Highly Purified. CAS No. 1379261-17-2. Pack Sizes: 100mg, 250mg. Molecular Formula: C9H9NO4, Molecular Weight: 195.172. US Biological Life Sciences.
The enzyme shows no activity with UDP-4-amino-4-deoxy-β-L-arabinose. Group: Enzymes. Synonyms: undecaprenyl-phosphate Ara4FN transferase; Ara4FN transferase; polymyxin resistance protein PmrF; UDP-4-amino-4-deoxy-α-L-arabinose:ditrans,polycis-undecaprenyl phosphate 4-amino-4-deoxy-α-L-arabinosyltransferase. Enzyme Commission Number: EC 2.4.2.53. 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-2683; undecaprenyl-phosphate 4-deoxy-4-formamido-L-arabinose transferase; EC 2.4.2.53; undecaprenyl-phosphate Ara4FN transferase; Ara4FN transferase; polymyxin resistance protein PmrF; UDP-4-amino-4-deoxy-α-L-arabinose:ditrans,polycis-undecaprenyl phosphate 4-amino-4-deoxy-α-L-arabinosyltransferase. Cat No: EXWM-2683.
10-Formyl Folic Acid
A Folic acid derivative (or folate) found in daily dietary intake that is often used in cancer risk correlation studies. Group: Biochemicals. Alternative Names: N- [4- [ [ (2-Amino-3, 4-dihydro-4-oxo-6-pteridinyl) methyl] formylamino] benzoyl] -L-glutamic Acid; 10-Formylpteroylglutamic Acid; N10-Formylfolic Acid; N- [p- [N- [ (2-Amino-4-hydroxy-6-pteridinyl) methyl] formamido] benzoyl] -glutamic Acid. CAS No. 134-05-4. Pack Sizes: 50mg, 100mg. Molecular Formula: C??H??N?O?. US Biological Life Sciences.
(1R-4S)-N-[4-chloro-5-(formylamino)-6-[[4-(hydroxymethyl)-2-cyclopenten-1-yl]amino]-2-pyrimidinyl]acetamide, is a precursor of (1S,4R)-4-(2-Amino-6-chloro-9H-purin-9-yl)-2-cyclopentene-1-methanol Hydrochloride, which is an intermediate for the synthesis of Abacavir. Synonyms: N-[4-chloro-5-formamido-6-[[(1R,4S)-4-(hydroxymethyl)cyclopent-2-en-1-yl]amino]pyrimidin-2-yl]acetamide; N-(4-Chloro-5-formamido-6-(((1R,4S)-4-(hydroxymethyl)cyclopent-2-en-1-yl)amino)pyrimidin-2-yl)acetamide; SCHEMBL8446236; (1R-4S)-N-[4-Chloro-5-(formylamino)-6-[[4-(hydroxymethyl)-2-cyclopenten-1-yl]amino]-2-pyrimidinyl]acetamide; (1R-4S)-N-[4-chloro-5-(formylamino)-6-[[4-(hydroxymethyl)-2-cyclopenten-1-yl] amino]-2-pyrimidinyl]acetamide; 136470-83-2; Acetamide, N-[4-chloro-5-(formylamino)-6-[[4-(hydroxymethyl)-2-cyclopenten-1-yl]amino]-2-pyrimidinyl]-, (1R-cis)-; N-[4-Chloro-5-formamido-6-[[(1R,4S)-4-(hydroxymethyl)cyclopent-2-en-1-yl]amino]pyrimidin-2-yl]acetamide. CAS No. 136522-32-2. Molecular formula: C13H16ClN5O3. Mole weight: 325.75.
(2S,3S,5S)-5-[(N-Formyl-L-leucyl)oxy]-2-hexyl-3-hydroxyhexadecanoic Acid-d3 (Mixture of Diastereomers)
A labeled metabolite of Orlistat. Group: Biochemicals. Alternative Names: N-Formyl-L-leucine(1S)-1-[(2S,3S)-3-carboxy-2-hydroxynonyl]dodecyl Ester-d3; 5-(Formamido-4-methylpentanoyloxy)-2-hexyl-3-hydroxyhexadecanoic Acid-d3. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences.
Worldwide
3-(Formylamino)-1H-pyrazole-4-carboxamide
An impurity of Allopurinol with inhibitory effects on human hypoxanthine phosphoribosyl transferase. Group: Biochemicals. Alternative Names: 3-Formamidopyrazole-4-carboxamide; Allopurinol Impurity B. Grades: Highly Purified. CAS No. 22407-20-1. Pack Sizes: 250mg. US Biological Life Sciences.
An impurity of Allopurinol. Group: Biochemicals. Alternative Names: 3-Formamidopyrazole-4-carboxylic Acid Ethyl Ester; Ethyl 3-(Formylamino)-1H-pyrazole-4-carboxylate; Allopurinol Impurity E. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences.
A metabolite of Dipyrone, a nonsteroidal anti-inflammatory drug. Group: Biochemicals. Alternative Names: N-(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide; 4- (Formylamino) antipyrine; 4-Formamidoantipyrine; N-Antipyrinylformamide; NSC 60565. Grades: Highly Purified. CAS No. 1672-58-8. Pack Sizes: 5mg. US Biological Life Sciences.
Worldwide
4-Formylamino Antipyrine-d3
4-Formylamino Antipyrine-d3 is the isotope labelled analog of 4-Formylamino Antipyrine (F695000); a metabolite of dipyrone and a nonsteroidal anti-inflammatory drug. Group: Biochemicals. Alternative Names: N-(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide-d3; 4- (Formylamino) antipyrine-d3; 4-Formamidoantipyrine-d3; N-Antipyrinylformamide-d3. Grades: Highly Purified. CAS No. Unlabelled: 1672-58-8. Pack Sizes: 1mg. Molecular Formula: C12H10D3N3O2, Molecular Weight: 234.27. US Biological Life Sciences.
Worldwide
5-Acetyl-d3-amino-6-formylamino-3-methyluracil(also see A168213)
Abacavir Impurity 10. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: N-(2-amino-4-(((1R,4R)-4-(((2-amino-6-chloro-5-formamidopyrimidin-4-yl)oxy)methyl)cyclopent-2-en-1-yl)amino)-6-chloropyrimidin-5-yl)formamide. Molecular Formula: C16H17Cl2N9O3. Mole Weight: 454.27. Catalog: APB03139.
Acamprosate EP Impurity B
Acamprosate EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 3-formamidopropane-1-sulfonic acid (formylhomotaurine). Molecular Formula: C4H9NO4S. Mole Weight: 167.18. Catalog: APB03132.
Allopurinol EP Impurity B
Allopurinol EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 5-formamido-1H-pyrazole-4-carboxamide. CAS No. 22407-20-1. Molecular Formula: C5H6N4O2. Mole Weight: 154.13. Catalog: APB22407201.
Allopurinol EP Impurity E
Allopurinol EP Impurity E. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: ethyl 5-formamido-1H-pyrazole-4-carboxylate. CAS No. 31055-19-3. Molecular Formula: C7H9N3O3. Mole Weight: 183.16. Catalog: APB31055193.
Amorolfine EP Impurity B
Amorolfine EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (R) -1- (N- ( (R) -2-methyl-3- (4- (tert-pentyl) phenyl) propyl) formamido) propan-2-yl acetate. CAS No. 142347-84-0. Molecular Formula: C21H33NO3. Mole Weight: 347.49. Catalog: APB142347840.
Antimycin A is a macrolide antibiotic produced by Streptomyces kitasawaensis, Str. griseus and Str. antibioticus. Antimycin A2 can inhibit atp-citrate lyase activity. Synonyms: 3-(3-Formamidosalicylamido)-8-hexyl-2,6-dimethyl-4,9-dioxo-1,5-dioxonan-7-yl butyrate. Grades: 90%. CAS No. 27220-57-1. Molecular formula: C27H38N2O9. Mole weight: 534.60.
Antimycin A4
Antimycin A is a macrolide antibiotic produced by Streptomyces kitasawaensis, Str. griseus and Str. antibioticus. Antimycin A4 can inhibit atp-citrate lyase activity. Synonyms: 8-Butyl-3-(3-formamido-2-hydroxybenzamido)-2,6-dimethyl-4,9-dioxo-1,5-dioxonan-7-yl butyrate. Grades: >98% by HPLC. CAS No. 27220-59-3. Molecular formula: C25H34N2O9. Mole weight: 506.54.
Bortezomib Impurity E. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (S)-N-(1-formamido-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide. Molecular Formula: C15H14N4O3. Mole Weight: 298.3. Catalog: APB03419.
Caffeine Impurity B
An impurity of Dyphylline which is a mainstay of therapy in some patients with acute and chronic obstructive airway disease. Synonyms: 6-Amino-5-formamido-1,3-dimethyl-uracil; 1,3-Dimethyl-4-amino-5-(formylamino)uracil; 6-Amino-1,3-dimethyl-5-(formylamino)pyrimidine-2,4-dione; N-(6-Amino-1,2,3,4-tetrahydro-1,3-dimethyl-2,4-dioxo-5-pyrimidinyl)-formamide; N-(6-Amino-1,3-dimethyl-2,4-dioxo. Grades: > 95%. CAS No. 7597-60-6. Molecular formula: C7H10N4O3. Mole weight: 198.18.
Cefotaxime EP Impurity C
Cefotaxime EP Impurity C. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (6R,7R)-3-(acetoxymethyl)-7-((Z)-2-(2-formamidothiazol-4-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid. CAS No. 66403-32-5. Molecular Formula: C17H17N5O8S2. Mole Weight: 483.48. Catalog: APB66403325.
Cefpodoxime proxetil impurity F
Cefpodoxime proxetil impurity F. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (6R,7R)-(R)-1-((isopropoxycarbonyl)oxy)ethyl 7-((Z)-2-(2-formamidothiazol-4-yl)-2-(methoxyimino)acetamido)-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate. Molecular Formula: C22H27N5O10S2. Mole Weight: 585.61. Catalog: APB04052.
Clofarabine Impurity 12
Clofarabine Impurity 12. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (2R,3R,4S,5R)-5-((6-amino-2-chloro-5-formamidopyrimidin-4-yl)amino)-2-((benzoyloxy)methyl)-4-fluorotetrahydrofuran-3-yl benzoate. Molecular Formula: C24H21ClFN5O6. Mole Weight: 529.90. Catalog: APB04631.
Deisovalerylblastmycin
Deisovalerylblastmycin is an antimycin antibiotic produced by Streptomyces sp. 5140-A. It has a strong resistance to the rice pear (Magnae grisea) activity, with a MIC of 0.8 μg/mL. Synonyms: Deisovalerylblastmycin; Blastmycin, deisovalery-; N-(7-Butyl-8-hydroxy-4,9-dimethyl-2,6-dioxo-1,5-dioxonan-3-yl)-3-formamidosalicylamide; Salicylamide, N-(7-butyl-4,9-dimethyl-2,6-dioxo-8-hydroxy-1,5-dioxonan-3-yl)-3-formamido-. Grades: >98%. CAS No. 60504-95-2. Molecular formula: C21H28N2O8. Mole weight: 436.45.
Distamycin A
It is produced by the strain of Streptomyces distallicus NCIB 8936. It has the activity against gram-positive bacterium, mycobacterium, dermatophyte and Trichophyte. It has inhibitory effects on solid tumors such as Epstein-Barr ascites carcinoma, sarcoma 180, Walker 258, oberling-Guerin osteoma, and also inhibits vaccinosis virus, herpes simplex virus, adenovirus, and mouse hepatitis virus in cell culture. Synonyms: Distamycin; Distamycin-3; stallimycin; Herperetin; DST-A; Estalimicina; Stallimicina; Stallimycinum; 2N-(3,3-aminoiminopropyl)-4-[4-(4-formamido-1-methyl-1H-2-pyrrolylcarboxamido)-1-methyl-1H-2-pyrrolylcarboxamido]-1-methyl-1H-2-pyrrolecarboxamide. Grades: 95%. CAS No. 636-47-5. Molecular formula: C22H27N9O4. Mole weight: 481.51.
For-Met-Ala-Ser-OH is a peptide that binds to a formyl-peptide receptor on neutrophils. Synonyms: Formyl-MAS; N-Formyl-Met-Ala-Ser; formyl methionyl alanyl serine; N-formyl-L-methionyl-L-alanyl-L-serine; (S)-2-((S)-2-((S)-2-formamido-4-(methylthio)butanamido)propanamido)-3-hydroxypropanoic acid. Grades: ≥97% by HPLC. CAS No. 17351-32-5. Molecular formula: C12H21N3O6S. Mole weight: 335.38.
Formylglycinamide Ribotide
Formylglycinamide Ribotide (FGAR), along with glutamine, takes part in the ATP-dependent synthesis of Formylglycinamidine Ribonucleotide (FGAM) in the fourth step of the purine biosynthetic pathway. Synonyms: 2-(Formylamino)-N-(5-O-phosphono-β-D-ribofuranosyl)acetamide; 2-Formamido-N-β-D-ribofuranosylacetamide 5'-(Dihydrogen phosphate); 5'-Phosphoribosyl-N-formylglycinamide; FGAR; Formylglycinamide Ribonucleotide; N-Formylglycinamide Ribonucleotide; Phosphoribosylformylglycinamide; α-N-Formylglycinamide Ribonucleotide. CAS No. 349-34-8. Molecular formula: C8H15N2O9P. Mole weight: 314.19.
Formyl-L-methionine
Formyl-L-methionine is a protein amino acid present in the organelles of bacteria and related eukaryotes. It is a derivative of the amino acid methionine, in which a formate is added to the amino group of the methionine. It plays a crucial role in protein biosynthesis in bacteria, Mitochondria and chloroplasts. But it is not used for protein biosynthesis in Eukaryotic Cytosol, in which only the nuclear genes are translated. It's also not used in ARCHAEA. In humans, it is recognized by the immune system as a foreign substance and stimulates the body to fight potential infections. Synonyms: For-L-Met-OH; N-Formyl-L-methionine; 2-formamido-4-methylsulfanylbutanoic acid; N-Formyl-L -Methionine; L-Methionine, N-formyl-;(S)-2-Formamido-4-(methylthio)butanoic acid. Grades: ≥ 98% (HPLC). CAS No. 4289-98-9. Molecular formula: C6H11NO3S. Mole weight: 177.22.
Foxy-5
A Wnt5a peptide mimetic. It has been undergoing clinical trials for the treatment of prostate cancer, colorectal cancer, metastatic colon cancer, metastatic breast cancer, and metastatic prostate cancer. Synonyms: Foxy 5; Foxy5; (2S) -2- [ [ (2S) -4-carboxy-2- [ [ (2R) -2- [ [2- [ [ (2S) -3-carboxy-2- [ [ (2S) -2-formamido-4-methylsulfanylbutanoyl] amino] propanoyl] amino] acetyl] amino] -3-sulfanylpropanoyl] amino] butanoyl] amino] -4-methylpentanoic acid. Grades: >95%. CAS No. 881188-51-8. Molecular formula: C26H42N6O12S2. Mole weight: 694.8.
Fpg Protein from Escherichia coli, Recombinant
Fpg protein, a key enzyme in the DNA base excision repair pathway (BER), catalyses the excision of a broad spectrum of modified purines such as formamidopyrimidine (Fapy) and 8-oxoguanine (8-oxo-G). Fpg possess both DNA glycosylase activity that removes the mutated base and AP-lyase activity that releases ribose, leaving both 5'-and 3'-phosphorylated ends in the DNA. Several analytical methods based on Fpg protein activity in vitro were developed for detection and quantitation of oxidative damage to DNA mainly for FapyA, FapyG and 8-oxo-G. The fpg gene was cloned by Boiteux, et al. Fpg protein possess a zinc finger motif at its C-terminus (one zinc atom per molecule). ... Protein. Mole weight: mol wt 30.2 kDa (269 amino acids, predicted from the nucleotide sequence). Activity: >20 ,000 units/mg protein. Storage: -20°C. Form: buffered aqueous glycerol solution; Solution in 50% glycerol containing 50 mM potassium HEPES, pH 7.5, 1 mM DTT, 1 mM EDTA, and 200 mM NaCl. Source: E. coli. Species: Escherichia coli. Fapy-DNA glycosylase; deoxyribonucleate glycosidase; 2,6-diamino-4-hydroxy-5N-formamidopyrimidine-DNA glycosylase; 2,6-diamino-4-hydroxy-5 (N-methyl)formamidopyrimidine-DNA glycosylase; formamidopyrimidine-DNA glycosylase; DNA-formamidopyrimidine glycosidase; Fpg protein; DNA-formamidopyrimidine glycosylase; EC 3.2.2.23; 78783-53-6;
Fromyl-L-Valine
An intermediate of gramicidin A biosynthesis. Synonyms: For-L-Val-OH; N-Formyl-L-valine; FOR-VAL-OH; N-Formyl-valin; 2-formamido-3-methyl-butanoic acid; FORMYL-L-VALINE. Grades: ≥ 98% (HPLC). CAS No. 4289-97-8. Molecular formula: C6H11NO3. Mole weight: 145.16.
Ixazomib Impurity 14
Ixazomib Impurity 14. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 2,5-dichloro-N-(2-formamido-2-oxoethyl)benzamide. Molecular Formula: C10H8Cl2N2O3. Mole Weight: 275.09. Catalog: APB02174.
Macimorelin (also known as AEZS-130, EP-1572) is a novel synthetic small molecule, acting as a ghrelin agonist, that is orally active and stimulates the secretion of growth hormone (GH). Based on results of Phase 1 studies, AEZS-130 has potential applications for the treatment of cachexia, a condition frequently associated with severe chronic diseases. In addition to the therapeutic application, a Phase 3 trial with AEZS-130 as a diagnostic test for growth hormone deficiencies in adults has been completed. Synonyms: AEZS-130; AEZS 130; AEZS130; EP-1572; EP1572; EP 1572; JMV 1843; JMV-1843; 2-amino-N-((R)-1-(((R)-1-formamido-2-(1H-indol-3-yl)ethyl)amino)-3-(1H-indol-3-yl)-1-oxopropan-2-yl)-2-methylpropanamide. Grades: 98%. CAS No. 381231-18-1. Molecular formula: C26H30N6O3. Mole weight: 474.56.
Methotrexate sodium
Methotrexate sodium is one of methotrexate impurities. Methotrexate is a Folic Acid antagonist, used as a antineoplastic and antirheumatic. Uses: Abortifacient agents, nonsteroidal. Synonyms: sodium (4S) -4-carboxy-4-[ (4-{[ (2, 4-diaminopteridin-6-yl) methyl] (methyl) amino}phenyl) formamido]butanoate; sodium (2S)-4-carboxy-2- (4-{[ (2, 4-diaminopteridin-6-yl)methyl] (methyl)amino}benzamido)butanoate; sodium 4-carboxy-2- ({4-[[ (2, 4-diaminopteridin-6-yl) methyl] (methyl) amino]benzoyl}amino) butanoate. Grades: > 98%. CAS No. 15475-56-6. Molecular formula: C20H21N8NaO5. Mole weight: 476.42.
Methyl N-formylanthranilate
Esters. Alternative Names: 2-Formylamino-benzoic acidmethylester. CAS No. 41270-80-8. Mole weight: 179.17. Purity: 95%+. IUPACName: Methyl 2-formamidobenzoate. Canonical SMILES: COC(=O)C1=CC=CC=C1NC=O. Density: 1.243 g/mL at 25 °C(lit.).
N-[4-[3-[2-Amino-4-(formylamino)-1,6-dihydro-6-oxo-5-pyrimidinyl]-3-oxopropyl]benzoyl]-L-glutamic acid is one of pemetrexed impurities. Pemetrexed binds to and inhibits the enzyme thymidylate synthase (TS) which catalyses the methylation of 2'-deoxyuridine-5'-monophosphate (dUMP) to 2'-deoxythymidine-5'-monophosphate (dTMP), an essential precursor in DNA synthesis. Synonyms: Pemetrexed Seco-indolone; (S)-2-(4-(3-(2-Amino-4-formamido-6-oxo-1,6-dihydropyrimidin-5-yl)-3-oxopropyl)benzamido)pentanedioic acid; Pemetrexed Impurity 20. Grades: 98%. CAS No. 1644286-35-0. Molecular formula: C20H21N5O8. Mole weight: 459.41.