Hydroxychloroquine Impurity 24 CAS 5891-21-4
| CAS No. | 5891-21-4 |
| Molecular Formula | C5H9ClO |
| Molecular Weight | 120.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Hydroxychloroquine Impurity 24.
As a process- or degradation-related impurity, Hydroxychloroquine Impurity 24 (CAS 5891-21-4, C5H9ClO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Hydroxychloroquine Impurity 24 (C5H9ClO) contains a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 120.58 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 manufactures Hydroxychloroquine Impurity 24 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.
Physical & Chemical Properties
| Molecular Formula | C5H9ClO |
| Molecular Weight | 120.58 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Hydroxychloroquine Standards
- Hydroxychloroquine Impurity 46 (CAS CATO-C4X-183546)
- Hydroxychloroquine Sulfate Impurity 59 (CAS 83206-48-8)
- Hydroxychloroquine Impurity 18 (CAS 860544-46-3)
- Hydroxychloroquine Impurity 32 (CAS 106007-99-2)
- Hydroxychloroquine Impurity 21 (CAS 927-55-9)
- Hydroxychloroquine Impurity 17 (CAS CATO-C4X-183517)
- Hydroxychloroquine Impurity 77 (CAS CATO-C4X-183577)
- Hydroxychloroquine Impurity 18 (CAS 140-80-7)
Recommended Standards
- Valeryl Chloride (CAS 638-29-9)
- 1-Chloro-2,2-dimethylbutane (CAS 6366-35-4)
- Trimethylacetyl Chloride (CAS 3282-30-2)
- 1-Chloro-2,3-dimethyl-butane (CAS 600-06-6)
- Revefenacin Impurity 12 (CAS CATO-C4X-203112)
- Diacerein Impurity 14 (CAS 72049-19-5)
- Rivaroxaban Impurity 26 (CAS CATO-C4X-109026)
- 7-Methyl-1,2-dihydrocyclopenta[b]indol-3(4H)-one (CAS 261163-66-0)
- ((Trifluoromethyl)sulfinyl)benzene (CAS 703-18-4)
- Fmoc-2-amino-5-phenyl(3,4-Difluoro)-L-pentanoic acid (CAS 2350133-60-5)
- 6-(Cyclopentyloxy)pyrimidin-4-amine (CAS 1192813-96-9)
- 3-(Allylthio)-6-(2-aminophenyl)-1,2,4-triazin-5-ol (CAS 353516-57-1)
- 5-Chloro-6-(piperazin-1-yl)nicotinamide (CAS 683242-01-5)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
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