Furosemide Impurity N5 CAS 62971-57-7
| CAS No. | 62971-57-7 |
| Molecular Formula | C7H5Cl2NO4S |
| Molecular Weight | 270.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Furosemide Impurity N5 (CAS 62971-57-7), a pharmacopoeial impurity reference standard (molecular formula C7H5Cl2NO4S, MW 270.08 g/mol) used for the identification and quantification of trace impurities in APIs.
Furosemide Impurity N5 (C7H5Cl2NO4S) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Furosemide Impurity N5 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 | C7H5Cl2NO4S |
| Molecular Weight | 270.08 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 |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Furosemide Standards
- Furosemide Impurity 17 (CAS CATO-C4X-140217)
- Furosemide EP Impurity B (CAS 2736-23-4)
- Furosemide Impurity 19 (CAS CATO-C4X-140219)
- Furosemide Impurity 27 (CAS 2760-11-4)
- Furosemide Impurity 8 (CAS 41332-59-6)
- Furosemide Impurity 51 (CAS CATO-C4X-140251)
- Furosemide Impurity 64 (CAS 116436-17-0)
- Furosemide Impurity 44 (CAS CATO-C4X-140244)
Recommended Standards
- N-(4-Bromophenyl)maleamic acid (CAS 59256-47-2)
- 5-Fluoro-4-iodo-1H-pyrrolo[2,3-b]pyridine (CAS 1015610-23-7)
- N-(4-bromo-1-methyl-1H-pyrazol-5-yl)furan-2-carboxamide (CAS 679393-98-7)
- methyl 2-chloro-5-(chlorosulfonyl)pyridine-3-carboxylate (CAS 1118787-91-9)
- Piperacillin Open-Ring Methyl Ester Impurity 1 (CAS CATO-C4X-173229)
- Warfarin EP Impurity B (CAS 1076-38-6)
- Bromocriptine Mesilate EP Impurity G (CAS CATO-C4X-13618)
- 3-Amino-N-tert-butyl-4-fluorobenzene-1-sulfonamide (CAS 1017432-10-8)
- 2-Methyl-2,4,5,6-tetrahydro-1H-cyclobuta[f]inden-3-amine (CAS 2676863-67-3)
- (5-methoxycarbonyl-4-methyl-2-furyl)boronic acid (CAS 1449310-97-7)
- 3-Methylimidazo[1,2-a]pyridine-7-carboxylic Acid (CAS 1315359-97-7)
- N-(3-(2,5-Dimethylfuran-3-yl)-3-hydroxypropyl)-2-phenylethane-1-sulfonamide (CAS 1421528-71-3)
- 2-(6-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)acetic acid (CAS 1367794-36-2)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788692)
Why CATO?
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com