Oxybutynin Impurity 20 CAS CATO-C4X-197220
| CAS No. | CATO-C4X-197220 |
| Molecular Formula | C14H16O3 |
| Molecular Weight | 232.28 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 Oxybutynin Impurity 20.
As a process- or degradation-related impurity, Oxybutynin Impurity 20 (CAS CATO-C4X-197220, C14H16O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Oxybutynin Impurity 20 (C14H16O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 232.28 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Oxybutynin 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.
Physical & Chemical Properties
| Molecular Formula | C14H16O3 |
| Molecular Weight | 232.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Oxybutynin Standards
- Oxybutynin Impurity 4 (CAS 4335-77-7)
- Oxybutynin EP Impurity F (CAS 10399-13-0)
- Oxybutynin Impurity 13 (CAS CATO-C4X-197213)
- Oxybutynin Impurity 2 (CAS 31197-69-0)
- Oxybutynin Impurity 6 (CAS 76142-48-8)
- Oxybutynin Impurity N2 (CAS 81039-74-9)
- Oxybutynin Impurity 19 (CAS CATO-C4X-197219)
- Oxybutynin EP Impurity C (CAS 1199574-70-3)
Recommended Standards
- Selexipag Impurity 28 (CAS 1588-89-2)
- Melatonin impurity 9 (CAS 607-47-6)
- Ethambutol Impurity 7(Mixture of Diastereomers) (CAS 498-17-9)
- Ramelteon Impurity 34 (CAS 1356395-13-5)
- Paliperidone Impurity 31 (CAS 1172995-11-7)
- Bevantolol Impurity 33 (CAS CATO-C4X-241133)
- Ceftizoxime impurity 97 (CAS 186957-49-3)
- 2-{[5-(naphthalen-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetic acid (CAS 919466-69-6)
- tert-Butyl 4-aminopiperidine-1-carboxylate hydrochloride (CAS 189819-75-8)
- Naltrexone impurity 40 (CAS CATO-C4X-147540)
- Cyclopentyl 4-(3-chlorophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 5606-77-9)
- N-(3-Fluorophenyl)-2-(4-methyl-6-oxo-2-(piperidin-1-yl)pyrimidin-1(6H)-yl)acetamide (CAS 1251559-57-5)
- 5-Chloro-3-(chloromethyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole (CAS 1801253-90-6)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
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