4-Oxo-4,6-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid CAS 1822944-34-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1822944-34-2 |
| Molecular Formula | C7H4N2O3S |
| Molecular Weight | 196.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Oxo-4,6-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid (CAS 1822944-34-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H4N2O3S. Molecular weight: 196.18 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H4N2O3S |
| Molecular Weight | 196.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Oxo Standards
- 4-Oxo-3,4-dihydrothieno[3,2-d]pyrimidine-2-carboxylic acid (CAS 1029420-51-6)
- 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid (CAS 1104926-91-1)
- 4-Oxo-3,4-dihydrothieno[3,2-d]pyrimidine-7-carboxylic acid (CAS 1527518-33-7)
- 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 439693-47-7)
- 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-5-carboxamide (CAS 1801143-25-8)
- 7-Oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxylic acid (CAS 90691-08-0)
- 2-(6,7-Dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetic acid (CAS 926248-27-3)
- 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde (CAS 211235-87-9)
Recommended Standards
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- (3-Aminobenzofuran-2-yl)(3,4-dimethoxyphenyl)methanone (CAS 733790-97-1)
- (1-{[4-(Ethoxycarbonyl)-3,5-dimethyl-1H-pyrrol-2-yl]carbonyl}piperidin-4-yl)acetic acid 1142202-84-3 9287AC C17H24N2O5 (CAS 1142202-84-3)
- n-(2-Chloro-6-iodo-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)pivalamide (CAS 1357387-98-4)
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- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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