(3R,5R,8S,10S,13S,14S)-3-Hydroxy-10,13-dimethyl-3,4,5,6,7,8,10,12,13,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17(2H)-one CAS 571-49-3
| CAS No. | 571-49-3 |
| Molecular Formula | C19H28O2 |
| Molecular Weight | 288.42 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 (3R,5R,8S,10S,13S,14S)-3-Hydroxy-10,13-dimethyl-3,4,5,6,7,8,10,12,13,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17(2H)-one (CAS 571-49-3), a certified reference material (molecular formula C19H28O2, MW 288.42 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, (3R,5R,8S,10S,13S,14S)-3-Hydroxy-10,13-dimethyl-3,4,5,6,7,8,10,12,13,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17(2H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 288.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H28O2 |
| Molecular Weight | 288.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Recommended Standards
- (17β)-17-Hydroxy-17-methylestr-5(10)-en-3-one (CAS 2741-75-5)
- (8R,9S,10R,13S,14S)-3-hydroxy-10,13-dimethyl-3,4,5,6,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta[a]phenanthren-17-one (CAS 76822-24-7)
- (3R,8R,9S,10R,13S,14S)-3-hydroxy-10,13-dimethyl-3,4,5,6,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta[a]phenanthren-17-one (CAS 19671-47-7)
- (8R,9S,13S,14S)-13-Methyldodecahydro-17H-5,10-methanocyclopenta[a]phenanthrene-3,17(4H)-dione-18,18-d2 (CAS 71995-57-8)
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- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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