Bumetanide Impurity 20 CAS CATO-C4X-198620
| CAS No. | CATO-C4X-198620 |
| Molecular Formula | C7H6ClNO5S |
| Molecular Weight | 251.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H6ClNO5S, Bumetanide Impurity 20 contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 251.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Bumetanide Impurity 20 (CAS CATO-C4X-198620), a pharmacopoeial impurity reference standard (molecular formula C7H6ClNO5S, MW 251.64 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.
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.
Physical & Chemical Properties
| Molecular Formula | C7H6ClNO5S |
| Molecular Weight | 251.64 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bumetanide Standards
- Bumetanide Impurity 8 (CAS 25317-76-4)
- Bumetanide Impurity 117 (CAS 74917-54-7)
- Bumetanide Impurity 14 (CAS 118-97-8)
- Bumetanide Impurity 54 (CAS CATO-C4X-198654)
- Bumetanide Impurity 69 (CAS CATO-C4X-198669)
- Bumetanide Impurity 95 (CAS 688318-18-5)
- Bumetanide Impurity 94 (CAS 202209-14-1)
- Bumetanide Impurity 29 (CAS 32642-56-1)
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