Indometacin EP Impurity I CAS 16401-99-3
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 16401-99-3 |
| Molecular Formula | C21H20ClNO4 |
| Molecular Weight | 385.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Indometacin EP Impurity I (CAS 16401-99-3) pharmacopoeial impurity standards reference standard. Molecular formula: C21H20ClNO4. Molecular weight: 385.84 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C21H20ClNO4 |
| Molecular Weight | 385.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Indometacin Standards
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Recommended Standards
- N-(2-Chlorophenyl)-2-(6-(4-fluorophenyl)imidazo[2,1-b]thiazol-3-yl)acetamide (CAS 897464-44-7)
- Tepoxalin (CAS 103475-41-8)
- Cisapride Impurity 1 (CAS 83863-70-1)
- Naltrexone impurity 48 (CAS CATO-C4X-147548)
- Empagliflozin Impurity 6 (CAS CATO-C4X-10656)
- 121348-98-9 3,4-dichloro-n-[2-(dimethylamino)cyclohexyl]-n-methylbenzamide hcl (CAS 121348-98-9)
- 2-[(2-Chloro-6-fluorophenyl)methyl]-4-[(1E)-[(1-phenylethyl)imino]methyl]benzene-1,3-diol (CAS 338750-15-5)
- [(4-bromo-1-methyl-1H-pyrrol-2-yl)methyl](methyl)amine (CAS 1384596-71-7)
- N1-(4-Acetamidophenyl)-N2-cycloheptyloxalamide (CAS 900000-79-5)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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