Hydroxychloroquine Impurity 38 CAS 6823-83-2
| CAS No. | 6823-83-2 |
| Molecular Formula | C18H26ClN3 |
| Molecular Weight | N/A |
| 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 38.
CATO supplies Hydroxychloroquine Impurity 38 (CAS 6823-83-2), a pharmacopoeial impurity reference standard (molecular formula C18H26ClN3H2O4SH2O, MW 435.96 g/mol) used for the identification and quantification of trace impurities in APIs.
Hydroxychloroquine Impurity 38 (C18H26ClN3H2O4SH2O) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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.
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 38 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 | C18H26ClN3 H2O4S H2O |
| Molecular Weight | 435.96 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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; 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.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Hydroxychloroquine Standards
- Hydroxychloroquine Impurity 75 (CAS 100713-49-3)
- Hydroxychloroquine EP Impurity B (CAS 103152-84-7)
- Hydroxychloroquine EP Impurity B Hydrogen sulfate (CAS 103152-84-7(free base))
- Hydroxychloroquine EP Impurity E (CAS 10500-64-8)
- Hydroxychloroquine Impurity 32 (CAS 106007-99-2)
- Hydroxychloroquine Impurity 30 (CAS 1077-74-3)
- Hydroxychloroquine Impurity 53 (CAS 109-83-1)
- Hydroxychloroquine D5 (CAS 118-42-3(Unlabelled))
Recommended Standards
- Tenofovir alafenamide impurity 84 (CAS 2734880-21-6（free base）)
- Voglibose Impurity N7 (CAS 1384518-63-1)
- Ixazomib Impurity 81 (CAS CATO-C4X-126781)
- 4,5-Dimethyl-1H-1,2,3-triazole (CAS 42964-73-8)
- 1,3-Didodecyl-2-methyl-1H-imidazol-3-ium chloride (CAS 21054-71-7)
- 1-(2,4-Dichloro-5-(2-methoxyethoxy)phenyl)-N-(2-methoxyphenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 400088-24-6)
- Tert-butyl 2-(2-(3-(trifluoromethyl)phenoxy)ethyl)piperidine-1-carboxylate (CAS 1261940-28-6)
- 3,4-Difluoro-5-methylaniline (CAS 1505944-46-6)
- 2,5-Dichloro-N-(9-styrylacridin-2-yl)benzenesulfonamide (CAS 88522-60-5)
- ((Cys31,Nva34)-Neuropeptide Y (27-36))2 (CAS 172997-92-1)
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