Febuxostat Impurity 50 CAS 609-15-4
| CAS No. | 609-15-4 |
| Molecular Formula | C6H9ClO3 |
| Molecular Weight | 164.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Febuxostat Impurity 50 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.
CATO supplies Febuxostat Impurity 50 (CAS 609-15-4), a pharmacopoeial impurity reference standard (molecular formula C6H9ClO3, MW 164.59 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Febuxostat Impurity 50 (C6H9ClO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C6H9ClO3 |
| Molecular Weight | 164.59 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Febuxostat Standards
- Febuxostat Impurity 44 (CAS 79836-78-5)
- Febuxostat Impurity 5 (CAS 7133-90-6)
- Febuxostat Impurity 79 (CAS 25984-63-8)
- Febuxostat Impurity N3 (CAS 104317-54-6)
- Febuxostat Impurity 34 (CAS 18962-07-7)
- Febuxostat Impurity 35 (CAS 34133-58-9)
- Febuxostat impurity 37 (CAS 1229019-33-3)
- Febuxostat Impurity 75 (CAS 138330-01-5)
Recommended Standards
- Oxiracetam Impurity 21 (CAS 85153-60-2)
- 4-Chloroacetoacetic Acid Ethyl Ester (CAS 638-07-3)
- 2-Chloroethyl 3-oxobutanoate (CAS 54527-68-3)
- 2-chloro-5-(methoxymethyl)-1,3,4-thiadiazole (CAS 1339251-10-3)
- Osimertinib Impurity 22 (CAS CATO-C4X-204522)
- Nilotinib EP Impurity E (CAS 2119583-26-3)
- Azelastine impurity 62 (CAS CATO-C4X-139662)
- (2-((3,5-Difluorophenoxy)methyl)phenyl)boronic acid (CAS 1218790-92-1)
- 1-{4-[(difluoromethyl)sulfanyl]-3-methoxyphenyl}ethan-1-one (CAS 1221723-25-6)
- 4-(2-Aminoethyl)-2-propyltetrahydro-2h-pyran-4-ol (CAS 1523030-78-5)
- 4-(1-Ethyl-1h-pyrazol-4-yl)butan-1-amine (CAS 1344054-33-6)
- Tetrahydro-2H-pyran-4-carboximidamide (CAS 780031-45-0)
- (2-Methoxy-benzyl)-(2-methoxy-1-methyl-ethyl)-amine (2-methoxy-benzyl)-(2-methoxy-1-methyl-ethyl)amine (2-methoxybenzyl)(2-methoxy-1-methylethyl)amine 355818-30-3 [(2-methoxyphenyl)methyl](1-methoxypropan-2-yl)amine (CAS 355818-30-3)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
Why CATO?
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