Oxybutynin Impurity N2 CAS 81039-74-9
| CAS No. | 81039-74-9 |
| Molecular Formula | C17H20O3 |
| Molecular Weight | 272.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Oxybutynin Impurity N2 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.
CATO supplies Oxybutynin Impurity N2 (CAS 81039-74-9), a pharmacopoeial impurity reference standard (molecular formula C17H20O3, MW 272.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Oxybutynin Impurity N2 (C17H20O3) contains a steroid core, a hydroxyl group, an ether linkage. 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 272.34 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C17H20O3 |
| Molecular Weight | 272.34 g/mol |
| Appearance | Pale yellow to 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related Oxybutynin Standards
- Oxybutynin Impurity 2 (CAS 31197-69-0)
- Oxybutynin Impurity 13 (CAS CATO-C4X-197213)
- Oxybutynin EP Impurity F (CAS 10399-13-0)
- Oxybutynin Impurity 4 (CAS 4335-77-7)
- Oxybutynin Impurity 20 (CAS CATO-C4X-197220)
- Oxybutynin Impurity 19 (CAS CATO-C4X-197219)
- Oxybutynin EP Impurity C (CAS 1199574-70-3)
- Oxybutynin Impurity 6 (CAS 76142-48-8)
Recommended Standards
- 2-Cyano-3-(1-cyclohexyl-2,5-dimethyl-1h-pyrrol-3-yl)prop-2-enoic acid (CAS 732291-33-7)
- 3-((tert-Butoxycarbonyl)amino)-3-(piperidin-2-yl)propanoicacid (CAS 886362-32-9)
- 2-Amino-2-(1-(tert-butoxycarbonyl)-5-methylpiperidin-3-yl)acetic acid (CAS 2292381-04-3)
- 3-(1h-Benzo[d]imidazol-2-yl)-1,2,2-trimethylcyclopentane-1-carboxylic acid (CAS 417727-64-1)
- Finerenone Impurity 272 (CAS 2385902-88-3)
- Abacavir EP Impurity D (CAS 1443421-67-7)
- Phytomenadione/Vitamin K1 Impurity 100 (CAS CATO-C4X-2207100)
- Amino(2-bromophenyl)acetic acid (CAS 254762-66-8)
- Benzyl (1-hydroxy-3-phenylpropan-2-yl)carbamate (CAS 73747-40-7)
- ML 337 (CAS 1443118-44-2)
- 4-Amino-5-(3,4-difluorophenyl)-1-methylpyrrolidin-2-one hydrochloride (CAS 1423029-81-5)
- 1,6-Bis(triethoxysilyl)hexane (CAS 52034-16-9)
- N2,N4,1-tribenzylazetidine-2,4-dicarboxamide (CAS 1786096-77-2)
- Insulin Degludec Impurity 3 (CAS CATO-C4X-21573)
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