Furosemide Impurity 44 CAS CATO-C4X-140244
| CAS No. | CATO-C4X-140244 |
| Molecular Formula | C8H6Cl2O5S |
| Molecular Weight | 285.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Furosemide Impurity 44 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.
Furosemide Impurity 44 (CAS CATO-C4X-140244) is a certified pharmaceutical impurity reference standard with the molecular formula C8H6Cl2O5S and a molecular weight of 285.10 g/mol.
The molecular framework of Furosemide Impurity 44 (C8H6Cl2O5S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H6Cl2O5S |
| Molecular Weight | 285.10 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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 |
| Sulfur Atoms | 1 |
Related Furosemide Standards
- Furosemide Impurity 50 (CAS CATO-C4X-140250)
- Furosemide Impurity 55 (CAS 76852-02-3)
- Furosemide Impurity 16 (CAS 3740-18-9)
- Furosemide Impurity 26 (CAS CATO-C4X-140226)
- Furosemide Impurity 31 (CAS 4818-85-3)
- Furosemide Impurity 45 (CAS CATO-C4X-140245)
- Furosemide Impurity 8 (CAS 41332-59-6)
- Furosemide Impurity 19 (CAS CATO-C4X-140219)
Recommended Standards
- methyl 7-bromo-5-ethyl-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylate (CAS 2091582-11-3)
- Ibandronic Impurity 6 (CAS 63132-39-8)
- Methyl 4-amino-5-bromo-2-methylpyrrolo[2,1-f][1,2,4]triazine-7-carboxylate (CAS 2090690-20-1)
- Ethyl 2-(5-bromothiophen-2-yl)-2,2-difluoroacetate (CAS 1286792-85-5)
- Formoterol impurity 140 (CAS CATO-C4X-1525140)
- Nilotinib Impurity 20 (CAS CATO-C4X-125620)
- Nebivolol Impurity 58 (CAS CATO-C4X-196858)
- 4-Bromo-7-methyl-2,3-dihydro-1H-inden-1-one (CAS 90772-52-4)
- Moxifloxacin Impurity 46 (CAS 141290-02-0)
- Benzamidine Hydrochloride Hydrate (CAS 206752-36-5)
- 3-(5-Amino-4-methyl-2-oxopyridin-1(2h)-yl)propanoic acid (CAS 1533032-32-4)
- 7-methoxy-4-methyl-1,6-naphthyridine (CAS 2733119-38-3)
- 3-Bromo-N-propyl-5-(trifluoromethyl)benzenesulfonamide (CAS 951884-67-6)
- T-Peptide (CAS 2022956-62-1)
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