Clonazepam impurity 11 CAS CATO-C4X-140311
| CAS No. | CATO-C4X-140311 |
| Molecular Formula | C19H13Cl3 |
| Molecular Weight | 347.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Clonazepam impurity 11 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.
As a process- or degradation-related impurity, Clonazepam impurity 11 (CAS CATO-C4X-140311, C19H13Cl3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C19H13Cl3, Clonazepam impurity 11 contains chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 347.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C19H13Cl3 |
| Molecular Weight | 347.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Clonazepam Standards
- Clonazepam impurity 14 (CAS CATO-C4X-140314)
- Clonazepam impurity 10 (CAS CATO-C4X-140310)
- Clonazepam Impurity 3 (CAS 180854-85-7)
- Clonazepam Impurity 5 (CAS 17714-02-2)
- Methyl Clonazepam (CAS 5527-71-9)
- Clonazepam Impurity 20 (CAS CATO-C4X-140320)
- 【禁售不询】Clonazepam (CAS 1622-61-3)
- Clonazepam EP Impurity B (CAS 55198-89-5)
Recommended Standards
- Tris(4-chlorophenyl)methane (CAS 27575-78-6)
- N-(2,2,2-Trichloro-1-(pyrrolidin-1-yl)ethyl)cinnamamide (CAS 324069-34-3)
- 1-(2-(4-Bromo-2-chlorophenoxy)ethyl)-4-ethylpiperazine (CAS 1704074-28-1)
- (S)-8,14-Dihydroxy Efavirenz (CAS 252343-27-4)
- Lovastatin Impurity 10 (CAS CATO-C4X-168410)
- Cefoperazone Impurity 13 (CAS CATO-C4X-114913)
- Isepamicin Impurity 2 (CAS 328072-92-0)
- 4-Succinimidyloxycarbonyl-α-methyl-α-(2-pyridyldithio)toluene (CAS 112241-19-7)
- 2-(2-(Difluoromethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 960067-33-8)
- 6-Mercapto-2-(methylthio)pyrimidine-4(3H)-thione (CAS 6299-30-5)
- 2-{3-[(pyrrolidin-1-yl)methyl]-1H-indol-1-yl}acetic acid (CAS 879038-41-2)
- 2-Amino-4-(2,4-dimethoxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 328014-62-6)
- 5-(2-Fluorophenyl)-3-hydroxy-4-(4-methoxybenzoyl)-1-((tetrahydrofuran-2-yl)methyl)-1H-pyrrol-2(5H)-one (CAS 489463-71-0)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
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