Indapamide Impurity 17 CAS 2494-79-3
| CAS No. | 2494-79-3 |
| Molecular Formula | C7H4Cl2O4S |
| Molecular Weight | 255.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Indapamide Impurity 17 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Indapamide Impurity 17 (CAS 2494-79-3, C7H4Cl2O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Indapamide Impurity 17 (C7H4Cl2O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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 | C7H4Cl2O4S |
| Molecular Weight | 255.08 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Indapamide Standards
- Indapamide Impurity 21 (CAS 70049-77-3)
- Indapamide Impurity 11 (CAS 1856658-28-0)
- Indapamide Impurity 14 (CAS 604787-44-2)
- Indapamide Impurity 52 (CAS CATO-C4X-140052)
- Indapamide Impurity F (CAS 62574-66-7)
- Indapamide Impurity 6 (CAS 2455-92-7)
- Indapamide Impurity 2 (CAS CATO-C4X-14002)
- Indapamide Impurity 51 (CAS CATO-C4X-140051)
Recommended Standards
- 4-Chloro-2-(chlorosulfonyl)benzoic acid (Bumetanide Impurity) (CAS 923137-49-9)
- 1-(4-Bromo-2-fluorobenzyl)-1H-pyrazole (CAS 1029715-40-9)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,6-dicarbonitrile (CAS 2223048-32-4)
- 5-Bromo-1-(2-fluorobenzyl)-1H-pyrazole (CAS 1057383-75-1)
- Choline Fenofibrate Impurity 25 (CAS CATO-C4X-101825)
- Fudosteine Impurity 45 (CAS 1023971-15-4)
- Sulpiride EP Impurity G (CAS 67381-52-6)
- 1-(O-tolyl)cyclopentan-1-ol (CAS 100256-17-5)
- 2-Chloro-3-(fluoromethyl)benzaldehyde (CAS 916791-72-5)
- 2-(2,4-Difluorophenoxy)-4-methylquinoline (CAS 338749-98-7)
- {4-[2-(4-Methoxyphenyl)ethyl]phenyl}amine hydrochloride (CAS 174340-00-2)
- 3-(2-Chlorophenyl)-2-cyano-2-methylpropanoic acid (CAS 606148-91-8)
- Ethyl 3-phenyl-4,5-dihydroisoxazole-5-carboxylate (CAS 50899-14-4)
- Calcium-Like Peptide 3 (CAS 261969-05-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com