Rapamycin Impurity 21 CAS 151945-42-5
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 151945-42-5 |
| Molecular Formula | C51H79NO13 |
| Molecular Weight | 914.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Rapamycin Impurity 21 (CAS 151945-42-5) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C51H79NO13. Molecular weight: 914.17 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C51H79NO13 |
| Molecular Weight | 914.17 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 1 |
Related Rapamycin Standards
- Rapamycin Impurity 12 (CAS 150821-39-9)
- Rapamycin Impurity 19 (CAS 144293-63-0)
- Rapamycin Impurity 24 (CAS CATO-C4X-174624)
- Rapamycin Impurity 25 (CAS 151945-42-5 (racemic))
- Rapamycin Dehydration Impurity (CAS CATO-C4X-174627)
- Rapamycin Impurity 29 (CAS CATO-C4X-174629)
- Rapamycin Impurity 31 (CAS CATO-C4X-174631)
- Rapamycin Aldehyde Degrades Impurity (CAS CATO-C4X-174628)
Recommended Standards
- Everolimus EP Impurity A (CAS 53123-88-9)
- Everolimus Impurity 17 (CAS 253431-35-5)
- Everolimus Impurity 16 (CAS 147438-29-7)
- Topiroxostat Impurity 34 (CAS 2044708-04-3)
- Bromocriptine Impurity 16 (CAS CATO-C4X-136116)
- 2,3-Difluoro-6-(methylthio)benzoic acid (CAS 2586126-74-9)
- 1-Benzyl-4-bromo-1H-pyrazol-3(2H)-one (CAS 58365-17-6)
- 3-Methoxy-3'-(trifluoromethyl)-[1,1'-biphenyl]-4-ol (CAS 1261990-39-9)
- (2E)-3-{4-[(2-chloro-6-fluorophenyl)methoxy]phenyl}-N-[3-(dimethylamino)propyl]prop-2-enamide (CAS 477870-59-0)
- Semaglutide impurity 01 (CAS 1998701-31-7)
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