(4bS,8aS)-3-Hydroxy-2-isopropyl-4b,8,8-trimethyl-5,6,7,8,8a,9-hexahydrophenanthrene-1,4,10(4bH)-trione CAS 57685-32-2
| CAS No. | 57685-32-2 |
| Molecular Formula | C20H26O4 |
| Molecular Weight | 330.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (4bS,8aS)-3-Hydroxy-2-isopropyl-4b,8,8-trimethyl-5,6,7,8,8a,9-hexahydrophenanthrene-1,4,10(4bH)-trione.
CATO supplies (4bS,8aS)-3-Hydroxy-2-isopropyl-4b,8,8-trimethyl-5,6,7,8,8a,9-hexahydrophenanthrene-1,4,10(4bH)-trione (CAS 57685-32-2), a certified reference material (molecular formula C20H26O4, MW 330.42 g/mol) for analytical method development and quality control.
(4bS,8aS)-3-Hydroxy-2-isopropyl-4b,8,8-trimethyl-5,6,7,8,8a,9-hexahydrophenanthrene-1,4,10(4bH)-trione (C20H26O4) contains a flavonoid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C20H26O4 |
| Molecular Weight | 330.42 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.) | 1973 |
Recommended Standards
- (4aR,5S,6R,8aS)-5-(2-(furan-3-yl)ethyl)-8a-(hydroxymethyl)-5,6-dimethyl-4a,5,6,7,8,8a-hexahydronaphthalene-1-carboxylic acid (CAS 51905-84-1)
- (8Z)-8-(Methoxyimino)-4,10-dithia-1-azatetracyclo[9.7.0.0^{3,7}.0^{12,17}]octadeca-3(7),5,12(17),13,15-pentaen-18-one (CAS 866008-38-0)
- (4-(Prop-1-en-2-yl)-1,3-phenylene)bis(oxy)bis(methylene)dibenzene (CAS 747414-16-0)
- (E)-1-(4-(2,5-dimethyl-1H-pyrrol-1-yl)phenyl)-3-(p-tolylamino)prop-2-en-1-one (CAS 865658-20-4)
- 2-Amino-3-(3,3-dimethyl-2,5-dioxopyrrolidin-1-yl)-2-methylpropanamide (CAS 1488950-40-8)
- 1-(4-(Diethylamino)phenyl)propan-2-ol (CAS 1283163-43-8)
- 2-(2-methoxyphenyl)-1,3,4-oxadiazole (CAS 42966-95-0)
- tert-Butyl 2,3,4,5-tetrahydro-1h-1,5-benzodiazepine-1-carboxylate (CAS 946386-48-7)
- 5-(3,4-Dihydroxyphenyl)oxazole-2(3H)-thione (CAS 114272-13-8)
- 2-(Allylamino)nicotinonitrile (CAS 77276-35-8)
- Testosterone Impurity 31 (CAS CATO-C4X-243231)
- Ethyl 2,4-dichloro-5-(difluoromethoxy)phenylacetate (CAS 1804884-99-8)
- 2-(2',3',4,6'-Tetrachloro-[1,1'-biphenyl]-2-yl)acetic acid (CAS 1361654-04-7)
- [y-Glu15]-Semaglutide Impurity 134 (CAS CATO-C4X-2226134)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com