7-Chloro-N-(4-chlorophenyl)-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide CAS 338778-79-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 338778-79-3 |
| Molecular Formula | C20H12Cl2N2O3 |
| Molecular Weight | 399.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Chloro-N-(4-chlorophenyl)-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide (CAS 338778-79-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H12Cl2N2O3. Molecular weight: 399.23 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C20H12Cl2N2O3 |
| Molecular Weight | 399.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 3-Cyano-6-(4-methoxyphenyl)pyridin-2-yl 2,6-dichlorobenzoate (CAS 303152-18-3)
- Etnipromid (CAS 76120-22-4)
- 3-Cyano-6-(3-methoxyphenyl)pyridin-2-yl 2,6-dichlorobenzoate (CAS 303152-22-9)
- 5-(6-Methyl-1H-indol-3-yl)-1,3-thiazol-2-amine (CAS 1134334-49-8)
- 2-(1-Cyclopropyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)acetonitrile (CAS 1402445-99-1)
- N-methoxy-1-methylpyrrolidine-2-carboxamide (CAS 742691-96-9)
- 2-(tert-Butyl)-4-cyclopropoxy-6-iodopyridine (CAS 1243464-86-9)
- 2-(4-Bromophenyl)-2,2-difluoroacetamide (CAS 1375473-36-1)
- 2-Cyclopropoxy-4-(dimethylamino)benzamide (CAS 1243476-19-8)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
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