Bumetanide Impurity 34 CAS CATO-C4X-198634
| CAS No. | CATO-C4X-198634 |
| Molecular Formula | C16H19NO4S |
| Molecular Weight | 321.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Bumetanide Impurity 34 (CAS CATO-C4X-198634), a pharmacopoeial impurity reference standard (molecular formula C16H19NO4S, MW 321.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Bumetanide Impurity 34 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 321.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C16H19NO4S |
| Molecular Weight | 321.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bumetanide Standards
- Bumetanide Impurity 63 (CAS CATO-C4X-198663)
- Bumetanide Impurity 46 (CAS 28328-56-5)
- Bumetanide Impurity 77 (CAS CATO-C4X-198677)
- Bumetanide Impurity 102 (CAS CATO-C4X-1986102)
- Bumetanide Impurity 130 (CAS CATO-C4X-1986130)
- Bumetanide Impurity 27 (CAS CATO-C4X-198627)
- Bumetanide Impurity 22 (CAS CATO-C4X-198622)
- Bumetanide Impurity 74 (CAS CATO-C4X-198674)
Recommended Standards
- Albendazole EP Impurity H (CAS 2469260-71-5)
- Phenyl[2-phenylthio)phenyl]carbamate (CAS 111974-73-3)
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- Boc-β-(3-benzothienyl)-Ala-OH (CAS 154902-51-9)
- Moxifloxacin Impurity 36 (CAS 1395056-42-4(free base）)
- Olodaterol Impurity 26 (CAS CATO-C4X-194326)
- Arotinolol impurity 27 (CAS CATO-C4X-185427)
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- 1-Methyl-3-Nitroguanidine (CAS 4245-76-5)
- 2-(1H-Indol-6-yl)ethanol (CAS 321745-14-6)
- (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(4-(tert-butoxy)benzyl)propanoic acid (CAS 1265891-83-5)
- 4-(1,3-Dioxo-3,3a,4,4a,5,5a,6,6a-octahydro-4,6-ethenocyclopropa[f]isoindol-2(1H)-yl)benzoic acid (CAS 354812-64-9)
- 2-(2-Methoxy-3-methylphenyl)acetic acid (CAS 854812-10-5)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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