Ketotifen EP Impurity A CAS 4673-38-5
Purity >80%In StockPharmacopoeial Impurity Standards
| CAS No. | 4673-38-5 |
| Molecular Formula | C19H19NS |
| Molecular Weight | 293.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ketotifen EP Impurity A (CAS 4673-38-5) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C19H19NS. Molecular weight: 293.43 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C19H19NS |
| Molecular Weight | 293.43 g/mol |
| Purity | >80% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ketotifen Standards
- Ketotifen Impurity 19 (CAS 34580-20-6)
- Ketotifen Impurity 31 (CAS CATO-C4X-204631)
- Ketotifen Impurity 24 (CAS CATO-C4X-204624)
- Ketotifen (CAS 34580-13-7)
- Ketotifen EP Impurity F (Mixture of Enol and Ketone) (CAS 34580-09-1)
- Ketotifen EP Impurity E (CAS 1346603-71-1)
- Ketotifen Impurity 20 (CAS CATO-C4X-204620)
- Ketotifen Impurity 28 (CAS CATO-C4X-204628)
Recommended Standards
- Pimethixene (CAS 314-03-4)
- N-[2-(2-Ethoxyethoxy)benzyl]-1-heptanamine (CAS 1040691-68-6)
- N-(2-(4-Methylpiperazin-1-yl)-2-(thiophen-3-yl)ethyl)cyclopropanecarboxamide (CAS 954595-05-2)
- Lemborexant impurity 17 (CAS 1450904-92-3)
- Ixazomib Impurity 53 (CAS CATO-C4X-126753)
- (R)-9-Anthracenyl[3-(morpholine-4-carbonyl)-[1,4’-bipiperidin]-1’-yl]methanone4-carbonyl)-[1,4’-bipiperidin]-1’-yl)methanone (CAS 591778-68-6)
- Solasodine hydrochloride (CAS 6106-33-8)
- 3-[4,6-dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanoic acid (CAS 847837-31-4)
- N'-{thieno[2,3-b]quinoline-2-carbonyl}-3-(trifluoromethyl)benzohydrazide (CAS 478079-51-5)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
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 13829788188 / jacky.chen@cato-chem.com