Hydroxychloroquine Impurity 41 CAS 91828-61-4
| CAS No. | 91828-61-4 |
| Molecular Formula | C18H24ClN3O |
| Molecular Weight | 333.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 41.
CATO supplies Hydroxychloroquine Impurity 41 (CAS 91828-61-4), a certified reference material (molecular formula C18H24ClN3O, MW 333.86 g/mol) for analytical method development and quality control.
Structurally, Hydroxychloroquine Impurity 41 (C18H24ClN3O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 333.86 g/mol, it falls into the moderately-high-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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Hydroxychloroquine Impurity 41 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 | C18H24ClN3O |
| Molecular Weight | 333.86 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Hydroxychloroquine Standards
- Hydroxychloroquine Impurity 90 (CAS CATO-C4X-183590)
- Hydroxychloroquine Impurity 36 (CAS CATO-C4X-183536)
- (S)-Hydroxychloroquine, >98% (CAS 137433-24-0)
- Hydroxychloroquine Impurity 12 (CAS CATO-C4X-183512)
- Hydroxychloroquine Impurity 13 (CAS 2411340-31-1)
- Hydroxychloroquine R-isomer Impurity (CAS 137433-23-9)
- Hydroxychloroquine impurity 78 (CAS CATO-C4X-183578)
- Hydroxychloroquine Impurity 97 (CAS CATO-C4X-183597)
Recommended Standards
- 5-(((4-Chlorophenyl)thio)methyl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 81863-74-3)
- Ipconazole Impurity 1 (CAS 191166-47-9)
- 4-(4-Chlorophenyl)-2-[(Z)-2-[1-(thiophen-2-yl)ethylidene]hydrazin-1-yl]-1,3-thiazole (CAS 36941-47-6)
- Ipconazole Impurity 2 (CAS 115937-89-8)
- Doripenem (CAS 148016-81-3)
- Ethyl 3-(3,4-dichlorophenoxy)propanoate (CAS 91090-73-2)
- 2-Amino-7-methoxy-4-(pyridin-3-yl)-4H-chromene-3-carbonitrile (CAS 475576-65-9)
- 4-(Ethoxycarbonyl)isophthalic acid (CAS 14230-18-3)
- 5,7-Dimethylindole, 98% (CAS 54020-53-0)
- (2R,7aR)-7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2-fluorohexahydro-1H-pyrrolizine (CAS 2454490-71-0)
- 1,2,3-Thiadiazole-4-carboxylic acid (CAS 4100-13-4)
- 5,10-Dimethyl-5,10-dihydroboranthrene (CAS 62025-67-6)
- N-(3-nitrophenyl)-1-(2-(pyrrolidin-1-yl)thiazol-5-yl)methanimine (CAS 860788-99-4)
- Influenza PR8 Hemagglutinin Peptide (110-119) (H-6312.0005) (CAS 132031-50-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com