Indapamide Impurity 42 CAS CATO-C4X-140042
| CAS No. | CATO-C4X-140042 |
| Molecular Formula | C22H24ClN3O9S |
| Molecular Weight | 541.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Indapamide Impurity 42 (C22H24ClN3O9S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Indapamide Impurity 42 (CAS CATO-C4X-140042), a pharmacopoeial impurity reference standard (molecular formula C22H24ClN3O9S, MW 541.96 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Indapamide Impurity 42 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C22H24ClN3O9S |
| Molecular Weight | 541.96 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Indapamide Standards
- Indapamide Impurity 13 (CAS CATO-C4X-140013)
- Indapamide Impurity 39 (CAS CATO-C4X-140039)
- Indapamide Impurity 26 (CAS CATO-C4X-140026)
- Indapamide Impurity 29 (CAS CATO-C4X-140029)
- Indapamide Impurity 34 (CAS CATO-C4X-140034)
- Indapamide Impurity 35 (CAS CATO-C4X-140035)
- Indapamide Impurity 36 (CAS CATO-C4X-140036)
- Indapamide Impurity 45 (CAS CATO-C4X-140045)
Recommended Standards
- N,N-Dihexadecylaniline (CAS 77772-74-8)
- 4,4'-Diiodo-2,2'-bis(trifluoromethyl)-1,1'-biphenyl (CAS 89803-70-3)
- Avanafil Impurity 150 (CAS CATO-C4X-1118150)
- 2-((4-(4-Chlorophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-methoxydibenzo[b,d]furan-3-yl)acetamide (CAS 476483-69-9)
- Labetalol Impurity N1 (CAS 63957-19-7)
- Propofol Impurity 39 (CAS 100482-27-7)
- Melatonin Impurity 27 (CAS 188397-02-6)
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Why CATO?
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