Oxazepam impurity 2 CAS 5628-00-2
| CAS No. | 5628-00-2 |
| Molecular Formula | C17H14ClNO4 |
| Molecular Weight | 331.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Oxazepam impurity 2 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.
Oxazepam impurity 2 (CAS 5628-00-2) is a certified pharmaceutical impurity reference standard with the molecular formula C17H14ClNO4 and a molecular weight of 331.75 g/mol.
Structurally, Oxazepam impurity 2 (C17H14ClNO4) contains a flavonoid core, 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 331.75 g/mol, it falls into the moderately-high-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.
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.
Physical & Chemical Properties
| Molecular Formula | C17H14ClNO4 |
| Molecular Weight | 331.75 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Oxazepam Standards
Recommended Standards
- Olodaterol Impurity N6 (CAS 869478-10-4)
- 3-Chloro-6-{2-phenylpyrazolo[1,5-a]pyridin-3-yl}pyridazine-4-carbonitrile (CAS 1196794-13-4)
- N-(7-(4-chlorobenzoyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)acetamide (CAS 886493-78-3)
- 2-(1H-1,3-Benzodiazol-2-yl)-4-chloro-5-(morpholin-4-yl)-2,3-dihydropyridazin-3-one (CAS 565192-21-4)
- Milrinone Impurity 24 (CAS CATO-C4X-109124)
- Lidocaine Hydrochloride EP Impurity K (CAS 50295-20-0)
- Naproxen Impurity 38 (CAS 2514763-96-1)
- 2-(1-Methylhydrazin-1-yl)pyridine (CAS 4231-74-7)
- 5-Bromo-2,3-dihydro-1H-inden-1-amine hydrochloride (CAS 1197595-75-7)
- Ethyl 3-(1H-indol-7-yl)propanoate (CAS 408356-03-6)
- n-(1-(3-Bromophenyl)ethyl)-2,2,2-trifluoroethan-1-amine (CAS 1016795-97-3)
- Mexiletine Impurity 17 (CAS CATO-C4X-192917)
- Ambroxol Impurity 98 (CAS CATO-C4X-108598)
- (D-Ala1)-Peptide T amide (CAS 106362-34-9)
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 18665070610 / Nicole.chen@cato-chem.com