Vitamin A Impurity 20 CAS CATO-C4X-218720
| CAS No. | CATO-C4X-218720 |
| Molecular Formula | C36H60O2 |
| Molecular Weight | 524.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Vitamin A Impurity 20 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.
As a process- or degradation-related impurity, Vitamin A Impurity 20 (CAS CATO-C4X-218720, C36H60O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Vitamin A Impurity 20 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 524.86 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C36H60O2 |
| Molecular Weight | 524.86 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Vitamin Standards
- 11-cis-Vitamin A Palmitate (CAS 51249-33-3)
- 13-cis-Vitamin A Palmitate (CAS 26771-20-0)
- 9-cis-Vitamin A palmitate (CAS 34356-29-1)
- Vitamin A Palmitate (CAS 79-81-2)
- Vitamin K1(25) (CAS 121840-65-1)
- Vitamin E succinate (CAS 17407-37-3)
- Vitamin K1 Impurity 47 (CAS 2682052-39-5)
- Vitamin A impurity 27 (CAS 62702-53-8)
Recommended Standards
- 9,13-Di-cis Vitamin A Palmitate (CAS 34356-30-4)
- N-(3-chlorophenyl)-2-((4-(2-chlorophenyl)-6-(4-chlorophenyl)-3-cyanopyridin-2-yl)thio)acetamide (CAS 332177-11-4)
- 2,4,6-Trichloro-N-{1-[(4-methoxyphenyl)methyl]-5,6-dimethyl-1H-1,3-benzodiazol-4-yl}benzene-1-sulfonamide (CAS 338955-00-3)
- 7-[4-(4-Chlorobenzenesulfonyl)piperazin-1-yl]-2,4-bis(trifluoromethyl)-1,8-naphthyridine (CAS 320417-95-6)
- Vortioxetine Impurity 70 (CAS CATO-C4X-105670)
- Cefoperazone Impurity N10 (CAS 59032-27-8)
- Faropenem Impurity 53 (CAS CATO-C4X-128953)
- 2-(4-Chlorophenyl)-6-(pentafluoro-λ6-sulfanyl)-1H-benzo[d]imidazole (CAS 1379803-56-1)
- Biotin-PEG4-Amide-C6-Azide (CAS 1006592-62-6)
- Flomoxef Impurity 54 (CAS CATO-C4X-138254)
- 5-AMINO-6-PHENYLPIPERIDIN-2-ONE (CAS 136920-91-7)
- Ethyl 2-[3-methyl-5-oxo-4-(4-phenoxyphenyl)-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetate (CAS 860789-24-8)
- 6-(Propan-2-yl)pyridine-2-carbothioamide (CAS 1256809-08-1)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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