Methyl 2-(5-cyano-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)thiophene-3-carboxylate CAS 338750-51-9
| CAS No. | 338750-51-9 |
| Molecular Formula | C11H7N3O4S |
| Molecular Weight | 277.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl 2-(5-cyano-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)thiophene-3-carboxylate (CAS 338750-51-9) is a high-purity analytical reference standard with the molecular formula C11H7N3O4S and a molecular weight of 277.26 g/mol.
Structurally, Methyl 2-(5-cyano-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)thiophene-3-carboxylate (C11H7N3O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 277.26 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H7N3O4S |
| Molecular Weight | 277.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 3-(5-cyano-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)thiophene-2-carboxylate (CAS 446276-11-5)
- 4-Cyano-N-(2-methylpyrazolo[1,5-a]pyrimidin-6-yl)benzamide (CAS 1797628-05-7)
- (E)-2-cyano-3-(4,5-dimethoxy-2-nitrophenyl)acrylamide (CAS 55801-65-5)
- Ethyl 2-cyano-2-cyclododecylideneacetate (CAS 184866-86-2)
- 4-CYANO-4-(((PROPYLTHIO)CARBONOTHIOYL)THIO)PENTANOIC ACID (CAS 1112997-73-5)
- N-(2-Cyano-3-methylbutan-2-yl)-2-(p-tolylthio)acetamide (CAS 1012262-89-3)
- Methyl 2-((4-cyano-1-methyl-5,6,7,8-tetrahydroisoquinolin-3-yl)thio)acetate (CAS 1411990-84-5)
- 2-((4-Cyano-1-ethyl-5,6,7,8-tetrahydroisoquinolin-3-yl)thio)acetic acid (CAS 95546-61-5)
Recommended Standards
- 6-((2-Methyl-5-nitro-1H-imidazol-4-yl)thio)-7H-purine (CAS 4604-85-7)
- 5-(3-Nitrobenzylidene)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (CAS 60045-64-9)
- Azathioprine (CAS 446-86-6)
- 3-(tert-Butoxycarbonyl)-7,7-difluoro-3-azabicyclo[4.1.0]heptane-4-carboxylic acid (CAS 2765271-01-8)
- 166442-35-9 2'-Carboxy-4-dimethylamino-2-hydroxy-4'-nitrobenzophenone 2-(4-Dimethylamino-2-hydroxybenzoyl)-5-nitrobenzoic Acid (CAS 166442-35-9)
- Tert-butyl (2s)-2-(4-aminopiperidine-1-carbonyl)pyrrolidine-1-carboxylate (CAS 1308650-29-4)
- 2-(Aminomethyl)-5-cyano-6-(difluoromethyl)pyridine-3-carboxaldehyde (CAS 1804418-53-8)
- 6-Amino-4-(2-methoxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 89700-76-5)
- 10-Hydroxy-10-methylanthracen-9(10H)-one (CAS 17104-31-3)
- Propiverine Impurity N1 HCl (CAS 54556-99-9)
- (3-(((Tert-butyldiphenylsilyl)oxy)methyl)oxetan-3-yl)methanol (CAS 1360106-23-5)
- (E)-Methyl 3-(3-aminophenyl)acrylate (CAS 163487-10-3)
- N-(Benzo[d][1,3]dioxol-5-yl)-2-(2-oxobenzo[cd]indol-1(2H)-yl)acetamide (CAS 354121-90-7)
- Vialox Peptide(Pentapeptide-3) (CAS 135679-88-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com