Clonazepam Impurity 19 CAS 191085-33-3
| CAS No. | 191085-33-3 |
| Molecular Formula | C30H21Cl2N5O8 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Clonazepam Impurity 19 (CAS 191085-33-3, C30H21Cl2N5O8HCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Clonazepam Impurity 19 (C30H21Cl2N5O8HCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Clonazepam Impurity 19 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 | C30H21Cl2N5O8 HCl |
| Molecular Weight | 686.88 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2011 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Clonazepam Standards
- Clonazepam impurity 13 (CAS 106351-41-1)
- 【禁售不询】Clonazepam (CAS 1622-61-3)
- Clonazepam Impurity 22 (CAS 16346-60-4)
- Clonazepam Impurity 5 (CAS 17714-02-2)
- Clonazepam Impurity 3 (CAS 180854-85-7)
- Clonazepam EP Impurity A (CAS 2011-66-7)
- Clonazepam impurity 17 (CAS 2246723-40-8)
- Clonazepam impurity 12 (CAS 2246723-47-5)
Recommended Standards
- Indobufen Impurity 16 (CAS 21762-22-1)
- Dexmedetomidine Impurity 39 (CAS CATO-C4X-123039)
- Tolvaptan Impurity 101 (CAS CATO-C4X-1955101)
- (2-chloroethyl)[(4-fluorophenyl)methyl]methylamine hydrochloride (CAS 91817-70-8)
- Lithium 3-(methoxymethyl)-1-methyl-1H-pyrazole-5-carboxylate (CAS 2460255-86-9)
- N-((2-Cyclobutylthiazol-4-yl)methyl)pyridin-2-amine (CAS 1427010-84-1)
- 2,5-Diethoxybenzoyl chloride (CAS 870703-51-8)
- 3,3,5-Trimethylcyclohexyl Acrylate(Mixture of isomers) (CAS 86178-38-3)
- tert-Butyl (1S,4S,6R)-6-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate (CAS 1099570-25-8)
- Neuropeptide Y (22-36) (CAS 119019-65-7)
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 18665070610 / Nicole.chen@cato-chem.com