【禁售不询】Diazepam EP impurity A CAS 1088-11-5
| CAS No. | 1088-11-5 |
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 【禁售不询】Diazepam EP impurity A (C15H11ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 270.71 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, 【禁售不询】Diazepam EP impurity A (CAS 1088-11-5, C15H11ClN2O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures 【禁售不询】Diazepam EP impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Diazepam Standards
- Diazepam EP Impurity E (CAS 20927-53-1)
- Diazepam Impurity 12 (CAS CATO-C4X-146512)
- Diazepam Impurity 10 (CAS CATO-C4X-146510)
- Diazepam (CAS 439-14-5)
- Diazepam EP Impurity C (CAS 5220-02-0)
- Diazepam EP Impurity F (CAS 31269-33-7)
- Diazepam Impurity 11 (CAS CATO-C4X-146511)
- Diazepam Impurity 12 (CAS 36271-03-1)
Recommended Standards
- Alprazolam Impurity 5 (CAS 5220-83-7)
- Azelastine EP Impurity D (CAS 53242-88-9)
- Indometacin Impurity 16 (CAS CATO-C4X-147016)
- Apixaban Impurity 54 (CAS 37522-29-5)
- Triptorelin Impurity 40 (CAS CATO-C4X-186240)
- Parecoxib Impurity 38 (CAS CATO-C4X-159138)
- Fesoterodine Impurity 3 (CAS 1380491-71-3)
- Benzyl (2-(1H-indol-3-yl)-2-oxoethyl)carbamate (CAS 73053-98-2)
- N-(3-(piperidin-3-yl)phenyl)acetamide hydrochloride (CAS 2409589-89-3)
- 2-(6-((2-Chlorobenzyl)thio)-9H-purin-9-yl)ethanol (CAS 2852-27-9)
- 1-(Bromomethyl)-2,4-dichlorobenzene (CAS 20443-99-6)
- 5H,6H,7H-cyclopenta[d]pyrimidin-2-ylmethanamine dihydrochloride (CAS 1609401-06-0)
- N-(2-Bromophenyl)-2-[(4-chlorophenyl)sulfanyl]acetamide (CAS 329078-71-9)
- Des-[Gly]31-Semaglutide (CAS CATO-C4X-2226156)
Why CATO?
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