12-Hydroxy-13-oxa-3-azapentacyclo[12.8.0.0^{2,11}.0^{4,9}.0^{15,20}]docosa-1(14),2,4(9),10,15(20),16,18,21-octaen-8-one CAS 866138-19-4
| CAS No. | 866138-19-4 |
| Molecular Formula | C20H15NO3 |
| Molecular Weight | 317.34 g/mol |
| 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.
CATO supplies 12-Hydroxy-13-oxa-3-azapentacyclo[12.8.0.0^{2,11}.0^{4,9}.0^{15,20}]docosa-1(14),2,4(9),10,15(20),16,18,21-octaen-8-one (CAS 866138-19-4), a certified reference material (molecular formula C20H15NO3, MW 317.34 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 12-Hydroxy-13-oxa-3-azapentacyclo[12.8.0.0^{2,11}.0^{4,9}.0^{15,20}]docosa-1(14),2,4(9),10,15(20),16,18,21-octaen-8-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 317.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C20H15NO3 |
| Molecular Weight | 317.34 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
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