Chlorpromazine Impurity 20 CAS CATO-C4X-142120
| CAS No. | CATO-C4X-142120 |
| Molecular Formula | C13H9ClN2O3 |
| Molecular Weight | 276.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Chlorpromazine Impurity 20 (CAS CATO-C4X-142120), a pharmacopoeial impurity reference standard (molecular formula C13H9ClN2O3, MW 276.68 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Chlorpromazine Impurity 20 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 276.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H9ClN2O3 |
| Molecular Weight | 276.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorpromazine Standards
- Chlorpromazine Impurity 8 (CAS 58-40-2)
- Chlorpromazine Impurity 6 (CAS 1730-46-7)
- Chlorpromazine Related Compound 3 (CAS 20650-07-1)
- Chlorpromazine EP Impurity D (CAS 1225-64-5)
- Chlorpromazine (CAS 50-53-3)
- Chlorpromazine EP Impurity E (CAS 92-39-7)
- Chlorpromazine Impurity 21 (CAS 68962-15-2)
- Chlorpromazine EP Impurity A (CAS 969-99-3)
Recommended Standards
- Clonazepam EP Impurity A (CAS 2011-66-7)
- Urapidil Impurity 16 (CAS CATO-C4X-192416)
- N-(4-chlorophenyl)-4-nitrobenzamide (CAS 2585-30-0)
- Chlorzoxazone Impurity 4 (CAS CATO-C4X-27774)
- Piribedil Impurity 5 (CAS CATO-C4X-28135)
- Cefepime Impurity 31 (CAS CATO-C4X-119331)
- Linaclotide impurity 36 (CAS CATO-C4X-210636)
- (5,6-Dibromo-3-(difluoromethyl)pyridin-2-yl)methanol (CAS 1805243-72-4)
- 4-chloro-2-(methylsulfanyl)-5-(trifluoromethyl)aniline (CAS 1805451-74-4)
- 2-(6-Methoxy-2-methylpyridin-3-yl)piperidine-1-carbaldehyde (CAS 1352483-75-0)
- 4-[(1-Methyl-1H-indazol-3-yl)-amino]-4-oxobut-2-enoic acid (CAS 1440537-86-9)
- 2-(Pyridin-2-yl)-3-(m-tolyl)quinazoline-4(3H)-thione (CAS 61351-65-3)
- 3-Chlorobenzoylisothiocyanate (CAS 66090-36-6)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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