Chlorpromazine impurity 18 HCl CAS 15502-93-9
| CAS No. | 15502-93-9 |
| Molecular Formula | C17H19BrN2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Chlorpromazine impurity 18 HCl (CAS 15502-93-9), a pharmacopoeial impurity reference standard (molecular formula C17H19BrN2SHCl, MW 399.77 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Chlorpromazine impurity 18 HCl (C17H19BrN2SHCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 399.77 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C17H19BrN2S HCl |
| Molecular Weight | 399.77 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorpromazine Standards
- Chlorpromazine N-Oxide Sulfoxide (CAS 10404-90-7)
- Chlorpromazine EP Impurity D (CAS 1225-64-5)
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- Chlorpromazine-13C,d3 Hydrochloride (CAS 1329612-87-4)
- Chlorpromazine Sulphoxide N-Oxide Maleate (CAS 150111-59-4)
- Chlorpromazine Impurity 12 (CAS 1672-76-0)
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