Hydroxychloroquine Impurity 40 CAS CATO-C4X-183540
| CAS No. | CATO-C4X-183540 |
| Molecular Formula | C19H26ClN3O3 |
| Molecular Weight | 379.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Hydroxychloroquine Impurity 40 (CAS CATO-C4X-183540, C19H26ClN3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C19H26ClN3O3, Hydroxychloroquine Impurity 40 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 379.88 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Hydroxychloroquine Impurity 40 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 | C19H26ClN3O3 |
| Molecular Weight | 379.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Hydroxychloroquine Standards
- Hydroxychloroquine Impurity 31 (CAS CATO-C4X-183531)
- Hydroxychloroquine Impurity 7 (CAS 47493-14-1)
- Hydroxychloroquine impurity 64 (CAS CATO-C4X-183564)
- Hydroxychloroquine impurity 65 (CAS CATO-C4X-183565)
- Hydroxychloroquine Impurity 22 (CAS CATO-C4X-183522)
- Hydroxychloroquine Impurity 89 (CAS CATO-C4X-183589)
- Hydroxychloroquine EP Impurity A (CAS 1449223-88-4)
- Hydroxychloroquine impurity 81 (CAS CATO-C4X-183581)
Recommended Standards
- Losartan Impurity 51 (CAS CATO-C4X-168351)
- Cyclopenthiazide (CAS 742-20-1)
- Losartan Impurity 29 (CAS 2204369-11-7)
- Licofelone (CAS 156897-06-2)
- Phenylephrine EP Impurity D (CAS 1367567-95-0)
- Olopatadine Impurity 51 (CAS 113806-01-2)
- Vitamin K1 Impurity 76 (CAS 180424-26-4)
- 2-(3-Hydroxyphenyl)-2-(phenylamino)acetic acid (CAS 1029107-56-9)
- TERT-BUTYL 3-(BENZYLOXY)PYRROLIDINE-1-CARBOXYLATE (CAS 127342-21-6)
- H-Pro-AMC (hydrobromide) (CAS 115388-93-7)
- (2R,3R)-3-Amino-2-hydroxy-3-(o-tolyl)propanoic acid (CAS 1217705-78-6)
- N-(11-Oxo-10,11-dihydrodibenzo[b,f][1,4]oxazepin-2-yl)methanesulfonamide (CAS 922137-36-8)
- 2-Propenoic acid, 2-methyl-, methyl ester, polymer with ethenylbenzene, 2-ethylhexyl 2-propenoate and 2-propenoic acid (CAS 27306-43-0)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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