Colchicine EP Impurity E CAS 7336-33-6
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 7336-33-6 |
| Molecular Formula | C21H23NO6 |
| Molecular Weight | 385.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Colchicine EP Impurity E (CAS 7336-33-6) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C21H23NO6. Molecular weight: 385.41 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C21H23NO6 |
| Molecular Weight | 385.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 1 |
Related Colchicine Standards
- Colchicine EP Impurity A (CAS 7411-12-3)
- Colchicine EP Impurity F (CAS 477-27-0)
- Colchicine Impurity 8 (CAS 6877-25-4)
- Colchicine Racemic Mixture Impurity (CAS 54192-66-4)
- rac-Colchicine, >98% (CAS 209810-38-8)
- (R)-Colchicine (CAS 75520-89-7)
- Colchicine EP Impurity B (CAS CATO-C4X-141112)
- Colchicine EP Impurity C (CAS 6901-13-9)
Recommended Standards
- Mivacurium chloride Impurity 40 (CAS CATO-C4X-137540)
- Naltrexone Impurity 21 (CAS 64643-76-1)
- Valaciclovir Impurity 55 (CAS CATO-C4X-124855)
- Tolvaptan Impurity 20 (CAS 137982-91-3)
- Lifitegrast Impurity 115 (CAS CATO-C4X-2409115)
- 5-Bromo-2-methoxy-3-methylbenzyl bromide (CAS 954124-94-8)
- 2-((Carboxymethyl)thio)benzoic acid (CAS 135-13-7)
- 4-Chloro-5-iodo-2-methyl-6-(trifluoromethyl)pyrimidine (CAS 792935-70-7)
- 1-(2,4-Dichlorophenyl)-N,N,5-trimethyl-1H-1,2,4-triazole-3-carboxamide (CAS 338398-18-8)
- 915019-08-8 55R7RG342O Tertomotide [INN] Human telomerase reverse transcriptase (EC 2.7.7.49)-(611-626)-peptide (telomerase catalytic subunit fragment) Tertomotide UNII-55R7RG342O GV 1001 GV-1001 (CAS 915019-08-8)
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 13829788188 / jacky.chen@cato-chem.com