Chlorpromazine EP Impurity D HCI CAS 3953-65-9
| CAS No. | 3953-65-9 |
| Molecular Formula | C16H17ClN2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Chlorpromazine EP Impurity D HCI (CAS 3953-65-9) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17ClN2SHCl and a molecular weight of 341.29 g/mol.
Structurally, Chlorpromazine EP Impurity D HCI (C16H17ClN2SHCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine 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 341.29 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C16H17ClN2S HCl |
| Molecular Weight | 341.29 g/mol |
| Purity | 97%+ |
| 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.) | 1958 |
| Halogen Content | Cl-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 18 HCl (CAS 15502-93-9)
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