(S)-Chlorpheniramine Maleate CAS 2438-32-6
| CAS No. | 2438-32-6 |
| Molecular Formula | C16H19ClN2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (S)-Chlorpheniramine Maleate.
CATO supplies (S)-Chlorpheniramine Maleate (CAS 2438-32-6), a certified reference material (molecular formula C16H19ClN2C4H4O4, MW 390.86 g/mol) for analytical method development and quality control.
Structurally, (S)-Chlorpheniramine Maleate (C16H19ClN2C4H4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 390.86 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C16H19ClN2 C4H4O4 |
| Molecular Weight | 390.86 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 |
| 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 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related S Standards
- Chlorpheniramine Impurity 41 (CAS 101286-08-2)
- Chlorpheniramine Maleate (CAS 113-92-8)
- Chlorpheniramine-d6 (CAS 1185054-60-7)
- Chlorpheniramine Impurity 15 (CAS 120244-82-8)
- Chlorpheniramine-d6 Maleate Salt (CAS 1219806-45-7)
- Chlorpheniramine (CAS 132-22-9)
- Chlorpheniramine Nitrile-d6 (CAS 1329488-38-1)
- R-Chlorpheniramine N-Oxide (CAS 142494-45-9)
Recommended Standards
- 2,6-Dichloro-4-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)phenol (CAS 1574340-13-8)
- 2-[5-(4-Fluoro-phenyl)-isoxazol-3-yl]-ethylamine (CAS 910411-00-6)
- (2S)-N-[1-(2-Chlorophenyl)-2-[(3,3-difluorocyclobutyl)amino]-2-oxoethyl]-1-(4-cyano-2-pyridyl)-N-(5-fluoro-3-pyridyl)-5-oxopyrrolidine-2-carboxamide (CAS 1448346-63-1)
- 2-(2-(5-Methylfuran-2-yl)vinyl)-4,6-bis(trichloromethyl)-1,3,5-triazine (CAS 156360-76-8)
- 8-Bromo-1,3,7-trimethylxanthine (CAS 10381-82-5)
- n-(2-Aminoethyl)thiophene-2-sulfonamide hydrochloride (CAS 1423032-29-4)
- Phenyl(pyridin-4-yl)methanamine (CAS 58088-57-6)
- 4,4-Dibenzyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 189109-70-4)
- Posaconazole Impurity 68 (CAS CATO-C4X-120868)
- Experimental Allergic Encephalitogenic Peptide (CAS 29705-92-8)
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