Lorazepam Impurity 12 CAS 837-58-1
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 837-58-1 |
| Molecular Formula | C13H9Cl2NO |
| Molecular Weight | 266.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Lorazepam Impurity 12 (CAS 837-58-1) pharmacopoeial impurity standards reference standard. Molecular formula: C13H9Cl2NO. Molecular weight: 266.12 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C13H9Cl2NO |
| Molecular Weight | 266.12 g/mol |
| Purity | 97%+ |
| 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
- Lorazepam EP Impurity A (CAS 2958-36-3)
- Lorazepam Impurity 11 (CAS CATO-C4X-104111)
- Lorazepam EP Impurity E (CAS 93955-15-8)
- 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)
Recommended Standards
- (2-amino-5-chlorophenyl)(3-chlorophenyl)methanone (CAS 5625-08-1)
- α-(Fluoromethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenemethanol (CAS 2845281-96-9)
- Diclofenac EP Impurity B (CAS 22121-58-0)
- Ruxolitinib Impurity 62 (CAS CATO-C4X-205862)
- Mirabegron Impurity 25 (CAS CATO-C4X-103225)
- m-Tolyl 8-methyl-2-phenylquinoline-4-carboxylate (CAS 355421-35-1)
- Ethyl 4,6-dimethoxypyrimidine-2-carboxylate (CAS 128276-49-3)
- Methyl (E)-3-hydroxy-2-phenylacrylate (CAS 19242-49-0)
- 3-(6-Methyl-5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)aniline (CAS 681837-49-0)
- Glucagon receptor antagonists-2 (CAS 202917-18-8)
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