Probucol Impurity 20 CAS CATO-C4X-292020
| CAS No. | CATO-C4X-292020 |
| Molecular Formula | C16H26O4S |
| Molecular Weight | 314.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H26O4S, Probucol Impurity 20 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 314.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Probucol Impurity 20 (CAS CATO-C4X-292020, C16H26O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C16H26O4S |
| Molecular Weight | 314.44 g/mol |
| Purity | ≥95% |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Probucol Standards
- Probucol Impurity 6 (CAS CATO-C4X-29206)
- Probucol Impurity 21 (CAS CATO-C4X-292021)
- Probucol Impurity 13 (CAS 40084-31-9)
- Probucol Impurity 23 (CAS CATO-C4X-292023)
- Probucol Impurity 9 (CAS CATO-C4X-29209)
- Probucol Impurity 10 (CAS 3957-71-9)
- Probucol Impurity 1 (CAS 950-59-4)
- Probucol USP Related Compound A (CAS 2455-14-3)
Recommended Standards
- Fluorescein Impurity 15 (CAS 869811-23-4)
- Alimemazine EP Impurity A (CAS 10071-07-5)
- Cilastatin EP Impurity H (CAS CATO-C4X-19605)
- N-(4-(Dimethylamino)phenyl)-1-(thiophen-2-yl)cyclopentane-1-carboxamide (CAS 1049555-57-8)
- Dobutamine Impurity 53 (CAS CATO-C4X-129853)
- Salbutamol Impurity 116 (CAS CATO-C4X-1176116)
- Nafamostat impurity 126 (CAS CATO-C4X-1332126)
- 2-Fluoro-4-methyl-5-pentafluoroethyl-pyridine (CAS 1246466-30-7)
- 7-Hydroxy-4-methyl-2H-1,4-benzoxazin-3-one (CAS 854163-75-0)
- 5-Methoxy-3,4-dihydroisoquinolin-1(2H)-one (CAS 129075-49-6)
- 1-(3,4-Dichlorobenzyl)-6-oxo-N-(3-(trifluoromethyl)phenyl)-1,6-dihydropyridine-3-carboxamide (CAS 338782-47-1)
- N-(3-Chloro-4-fluorophenyl)-2-((4-ethyl-5-(pyrazin-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 573707-56-9)
- 2-(4-Amino-5-chloro-6-(difluoromethyl)pyridin-3-yl)acetonitrile (CAS 1806842-52-3)
- Neuropeptide W-23 (human) (CAS 383415-79-0)
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