Lorazepam EP Impurity A CAS 2958-36-3
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 2958-36-3 |
| Molecular Formula | C13H9Cl2NO |
| Molecular Weight | 266.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Lorazepam EP Impurity A (CAS 2958-36-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C13H9Cl2NO. Molecular weight: 266.12 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C13H9Cl2NO |
| Molecular Weight | 266.12 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Lorazepam Standards
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- Lorazepam Impurity 2 (CAS 773871-49-1)
- Lorazepam Impurity 21 (CAS CATO-C4X-104121)
- Lorazepam USP Related Compound D (CAS 54643-79-7)
- (S)-Lorazepam (CAS 110032-65-0)
- (R)-Lorazepam (CAS 91402-80-1)
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