Probucol Impurity 14 CAS 31121-17-2
| CAS No. | 31121-17-2 |
| Molecular Formula | C28H42O2S4 |
| Molecular Weight | 538.89 g/mol |
| 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 Probucol Impurity 14 (CAS 31121-17-2), a pharmacopoeial impurity reference standard (molecular formula C28H42O2S4, MW 538.89 g/mol) used for the identification and quantification of trace impurities in APIs.
Probucol Impurity 14 (C28H42O2S4) contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 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 | C28H42O2S4 |
| Molecular Weight | 538.89 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1965 |
| Sulfur Atoms | 4 |
Related Probucol Standards
- Probucol Impurity 2 (CAS CATO-C4X-29202)
- Probucol Impurity 3 (CAS CATO-C4X-29203)
- Probucol-propionyl-<SUP>13</SUP>C<SUB>3</SUB> (CAS 1173019-29-8)
- Probucol Impurity 18 (CAS CATO-C4X-292018)
- Probucol Impurity 19 (CAS CATO-C4X-292019)
- Probucol Impurity 22 (CAS CATO-C4X-292022)
- Probucol Impurity 4 (CAS CATO-C4X-29204)
- Probucol-d6 (CAS 23288-49-5 (unlabelled))
Recommended Standards
- Vitamin D3 Decanoate (CAS 158180-04-2)
- Ethyl 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-(isobutyryloxy)azetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 875712-90-6)
- Cholecalciferol Impurity 30 (CAS CATO-C4X-158630)
- N-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)-4-fluoro-N-((3-(hydrazinecarbonyl)-4,5-dihydroisoxazol-5-yl)methyl)benzenesulfonamide (CAS 338961-92-5)
- Fenofibrate Impurity 12 (CAS 61002-27-5)
- Doxorubicin Impurity 11 (CAS CATO-C4X-203311)
- Melphalan Impurity 28 (CAS CATO-C4X-198828)
- 1-Cyclopropyl-5-amino-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (CAS 103772-14-1)
- 2-(azidomethyl)benzene-1-sulfonyl chloride (CAS 1365252-90-9)
- (S)-1-(4-chloro-3-fluorophenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213569-46-0)
- 3-Methyl-3-phenylamino-1-butyne (CAS 7471-09-2)
- (S)-3,7-diaminoheptanoic acid hydrochloride (CAS 192003-02-4)
- 2-(Difluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-6-acetonitrile (CAS 1804648-61-0)
- Atrial Natriuretic Polypeptide (4-28), human (CAS 95896-08-5)
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