Chlorpheniramine Impurity 10 CAS CATO-C4X-118810
| CAS No. | CATO-C4X-118810 |
| Molecular Formula | C18H21ClN2O2 |
| Molecular Weight | 332.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Chlorpheniramine Impurity 10 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Chlorpheniramine Impurity 10 (CAS CATO-C4X-118810), a pharmacopoeial impurity reference standard (molecular formula C18H21ClN2O2, MW 332.82 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H21ClN2O2, Chlorpheniramine Impurity 10 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 332.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C18H21ClN2O2 |
| Molecular Weight | 332.82 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 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorpheniramine Standards
- Chlorpheniramine Impurity 35 (CAS CATO-C4X-118835)
- Chlorpheniramine Impurity 37 (CAS CATO-C4X-118837)
- Chlorpheniramine Impurity 39 (CAS CATO-C4X-118839)
- Chlorpheniramine Impurity 40 (CAS CATO-C4X-118840)
- Chlorpheniramine Impurity 41 (CAS CATO-C4X-118841)
- Chlorpheniramine Nitrile-d6 (CAS 1329488-38-1)
- R-Chlorpheniramine N-Oxide (CAS 142494-45-9)
- Chlorpheniramine Impurity 15 (CAS 120244-82-8)
Recommended Standards
- Methyl 2-(4-(4-chlorobenzyl)phenoxy)-2-methylbutanoate (CAS 77985-11-6)
- 3-(4-Chlorophenyl)-1,5-diphenyl-4,5-dihydro-1H-pyrazole (CAS 10180-02-6)
- 5-Chloro-4-{[(4-fluorophenyl)sulfanyl]methyl}-1-methyl-3-phenyl-1H-pyrazole (CAS 318234-11-6)
- 4-Chloro-5-methyl-N-(4-(2-(pyrrolidin-1-yl)ethoxy)phenyl)pyrimidin-2-amine (CAS 1138473-55-8)
- Dutasteride EP Impurity G (CAS 1430804-85-5)
- Olmesartan Impurity 97 (CAS 2190488-06-1)
- Ondansetron Impurity 14 (CAS 30354-18-8)
- 7-(3-Fluorophenyl)-1h-indole (CAS 1214329-23-3)
- 4-(Bromomethyl)-3,3-dimethyltetrahydro-2H-pyran (CAS 2091216-50-9)
- Ethyl 3-(6-methylpyridin-2-yl)propanoate (CAS 502609-55-4)
- (Z)-2-methyl-4-(2-nitrobenzylidene)oxazol-5(4h)-one (CAS 98293-46-0)
- Cytidine-1- (CAS 201996-57-8)
- (2-Isopropoxypyridin-4-yl)boronic acid hydrochloride (CAS 2096333-98-9)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
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