Bumetanide EP Impurity A CAS 28328-53-2
| CAS No. | 28328-53-2 |
| Molecular Formula | C13H10N2O7S |
| Molecular Weight | 338.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Bumetanide EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Bumetanide EP Impurity A (CAS 28328-53-2) is a certified pharmaceutical impurity reference standard with the molecular formula C13H10N2O7S and a molecular weight of 338.29 g/mol.
Structurally, Bumetanide EP Impurity A (C13H10N2O7S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 338.29 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C13H10N2O7S |
| Molecular Weight | 338.29 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bumetanide Standards
- Bumetanide Impurity 123 (CAS CATO-C4X-1986123)
- Bumetanide Impurity 124 (CAS CATO-C4X-1986124)
- Bumetanide Impurity 125 (CAS CATO-C4X-1986125)
- Bumetanide Impurity 136 (CAS CATO-C4X-1986136)
- Bumetanide Impurity 52 (CAS CATO-C4X-198652)
- Bumetanide Impurity 83 (CAS CATO-C4X-198683)
- Bumetanide Impurity 104 (CAS 751422-00-1)
- Bumetanide Impurity 51 (CAS CATO-C4X-198651)
Recommended Standards
- Sulpiride Impurity 27 (CAS 62547-13-1)
- 2-Hydroxy-5-(n-(4-nitrophenyl)sulfamoyl)benzoic acid (CAS 62547-14-2)
- 2-Hydroxy-5-(3-nitrobenzenesulfonamido)benzoic acid (CAS 328028-25-7)
- 2-Hydroxy-4-(3-nitrobenzenesulfonamido)benzoic acid (CAS 326610-63-3)
- Tioconazole EP Impurity C (CAS 119386-76-4)
- Fluralaner impurity 41 (CAS CATO-C4X-218041)
- Erythromycin EP Impurity H（Erythromycin A N-oxide） (CAS 992-65-4)
- 2-Methylenecyclobutane-1-carboxylic acid (CAS 57822-22-7)
- [3-(4-methanesulfonylphenoxy)propyl](methyl)amine (CAS 1157381-77-5)
- (2,5-Dimethylphenyl)(phenyl)methanone (CAS 4044-60-4)
- 2-Amidinopyridine Hydrochloride (CAS 51285-26-8)
- N-Ethyl-2-phenoxyethanamine hydrochloride (CAS 100131-72-4)
- 5-Chloro-6-propylpyrimidine-2,4(1H,3H)-dione (CAS 89856-75-7)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com