Torasemide Impurity 16 CAS CATO-C4X-183616
| CAS No. | CATO-C4X-183616 |
| Molecular Formula | C6H6ClNO3S |
| Molecular Weight | 207.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Torasemide Impurity 16 (CAS CATO-C4X-183616), a pharmacopoeial impurity reference standard (molecular formula C6H6ClNO3S, MW 207.63 g/mol) used for the identification and quantification of trace impurities in APIs.
Torasemide Impurity 16 (C6H6ClNO3S) contains an amide group, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Torasemide Impurity 16 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 | C6H6ClNO3S |
| Molecular Weight | 207.63 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, 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; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Torasemide Standards
- Torasemide impurity 36 (CAS CATO-C4X-183636)
- Torasemide impurity 37 (CAS CATO-C4X-183637)
- Torasemide impurity 33 (CAS CATO-C4X-183633)
- Torasemide Impurity 29 (CAS CATO-C4X-183629)
- Torasemide Impurity 10 (CAS 110363-52-5)
- Torasemide Impurity 9 (CAS 110363-51-4)
- Torasemide impurity 35 (CAS CATO-C4X-183635)
- Torasemide impurity 34 (CAS CATO-C4X-183634)
Recommended Standards
- Hydrochlorothiazide Impurity 41 (CAS CATO-C4X-117741)
- Diazoxide Impurity 15 (CAS 78767-43-8)
- Hydrochlorothiazide Impurity 40 (CAS CATO-C4X-117740)
- Diazoxide Impurity 16 (CAS 576997)
- Sitafloxacin impurity 79 (CAS CATO-C4X-115579)
- Carfilzomib Impurity 73 (CAS CATO-C4X-102273)
- Ivacaftor impurity 17 (CAS CATO-C4X-296417)
- N-(5-Amino-2-fluorophenyl)-4-isopropoxybenzamide (CAS 1020053-84-2)
- 6-Methyl-2-(4-((3-methylpiperidin-1-yl)sulfonyl)benzamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxamide (CAS 449767-17-3)
- 6-Fluoropyrido[3,4-d]pyrimidin-4(3H)-one, 97% (CAS 171178-44-2)
- Renofluthrin (CAS 352271-52-4)
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- 2-Ethoxy-N-methoxy-N-methylacetamide (CAS 1104606-22-5)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com