Methyl (3beta,19alpha,20alpha)-16,17-didehydro-10,11-dimethoxy-19-methyloxayohimban-16-carboxylate CAS 131-02-2
| CAS No. | 131-02-2 |
| Molecular Formula | C23H28N2O5 |
| Molecular Weight | 412.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl (3beta,19alpha,20alpha)-16,17-didehydro-10,11-dimethoxy-19-methyloxayohimban-16-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl (3beta,19alpha,20alpha)-16,17-didehydro-10,11-dimethoxy-19-methyloxayohimban-16-carboxylate (CAS 131-02-2) is a high-purity analytical reference standard with the molecular formula C23H28N2O5 and a molecular weight of 412.48 g/mol.
Structurally, Methyl (3beta,19alpha,20alpha)-16,17-didehydro-10,11-dimethoxy-19-methyloxayohimban-16-carboxylate (C23H28N2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 412.48 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.
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.
Physical & Chemical Properties
| Molecular Formula | C23H28N2O5 |
| Molecular Weight | 412.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
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