N-Desethyl Oxybutynin Hydrochloride CAS 81039-77-2
| CAS No. | 81039-77-2 |
| Molecular Formula | C20H27NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
N-Desethyl Oxybutynin Hydrochloride (CAS 81039-77-2), molecular formula C20H27NO3HCl and molecular weight 365.90 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N-Desethyl Oxybutynin Hydrochloride (C20H27NO3HCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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 365.90 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C20H27NO3 HCl |
| Molecular Weight | 365.90 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- (R)-1-(3-chloro-5-(trifluoromethyl)phenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213076-22-2)
- 4-Fluorooctahydrocyclopenta[c]pyrrole (CAS 1423117-37-6)
- Ethyl 6-(chloromethyl)-4-[2-(difluoromethoxy)phenyl]-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 923737-55-7)
- 4-Acetamidofluorene (CAS 28322-02-3)
- 2-Chloro-n-(3-cyclopropyl-1h-pyrazol-5-yl)-5-fluoropyrimidin-4-amine (CAS 851434-98-5)
- 2-(4-(Difluoromethyl)-3-hydroxy-6-iodopyridin-2-yl)acetonitrile (CAS 1805451-75-5)
- n-(3-Bromophenyl)tetrahydro-2h-thiopyran-4-amine (CAS 1153291-14-5)
- [(5-methoxy-1h-indol-3-yl)methyl]dimethylamine (CAS 16620-52-3)
- N1-cyclopropyl-4-nitrobenzene-1,2-diamine (CAS 1248819-21-7)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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