Torasemide Impurity 6 CAS 106944-63-2
| CAS No. | 106944-63-2 |
| Molecular Formula | C16H20N4O3S |
| Molecular Weight | 348.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Torasemide Impurity 6 (C16H20N4O3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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. 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).
CATO supplies Torasemide Impurity 6 (CAS 106944-63-2), a pharmacopoeial impurity reference standard (molecular formula C16H20N4O3S, MW 348.42 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), Torasemide Impurity 6 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 | C16H20N4O3S |
| Molecular Weight | 348.42 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Torasemide Standards
- Torasemide Impurity 7 (CAS 106944-62-1)
- Torasemide Impurity 22 (CAS CATO-C4X-183622)
- Torasemide EP Impurity E (CAS 72810-57-2)
- Torasemide impurity 41 (CAS CATO-C4X-183641)
- Torasemide EP Impurity D (CAS 160972-33-8)
- Torasemide EP Impurity C (CAS 58155-35-4)
- Torasemide Impurity 44 (CAS CATO-C4X-183644)
- Torasemide Impurity 12 (CAS 99300-68-2)
Recommended Standards
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
- Ilaprazole Impurity 131 (CAS CATO-C4X-1130131)
- Benzylpenicillin Impurity 79 (CAS CATO-C4X-189979)
- N-Ethyl-2-(5-(hydroxymethyl)-2-((2-oxo-2-(phenylamino)ethyl)thio)-1H-imidazol-1-yl)acetamide (CAS 923195-00-0)
- Olaparib Impurity 5 (CAS 763111-47-3)
- Atracurium EP Impurity C (CAS CATO-C4X-185063)
- [8-L-β-aspartic acid]Terlipressin (CAS CATO-C4X-21937)
- Ethyl 2-(2-chloroethyl)piperidine-1-carboxylate (CAS 865076-02-4)
- 1-(Azetidin-3-yl)-4-methylpiperidin-4-ol dihydrochloride (CAS 1403766-74-4)
- 3-Chloro-2-cyanobenzeneboronic acid, 97% (CAS 1217500-67-8)
- 3-Amino-2-(2-methoxybenzyl)propan-1-ol (CAS 1017125-40-4)
- 6-((Naphthalen-1-ylmethyl)thio)-7H-purine (CAS 313984-77-9)
- Tert-butyl(2r)-2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2h-pyridine-1-carboxylate (CAS 2304631-54-5)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
Why CATO?
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