(1aR,2E,4aR,6S,7S,7aR,8S,9Z,11aS)-4a,7,8-Trihydroxy-9-(hydroxymethyl)-1,1,3,6-tetramethyl-1,1a,4a,5,6,7,7a,8,11,11a-decahydro-4H-cyclopenta[a]cyclopropa[f][11]annulen-4-one CAS 93551-00-9
| CAS No. | 93551-00-9 |
| Molecular Formula | C20H30O5 |
| Molecular Weight | 350.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (1aR,2E,4aR,6S,7S,7aR,8S,9Z,11aS)-4a,7,8-Trihydroxy-9-(hydroxymethyl)-1,1,3,6-tetramethyl-1,1a,4a,5,6,7,7a,8,11,11a-decahydro-4H-cyclopenta[a]cyclopropa[f][11]annulen-4-one is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(1aR,2E,4aR,6S,7S,7aR,8S,9Z,11aS)-4a,7,8-Trihydroxy-9-(hydroxymethyl)-1,1,3,6-tetramethyl-1,1a,4a,5,6,7,7a,8,11,11a-decahydro-4H-cyclopenta[a]cyclopropa[f][11]annulen-4-one (CAS 93551-00-9), molecular formula C20H30O5 and molecular weight 350.45 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (1aR,2E,4aR,6S,7S,7aR,8S,9Z,11aS)-4a,7,8-Trihydroxy-9-(hydroxymethyl)-1,1,3,6-tetramethyl-1,1a,4a,5,6,7,7a,8,11,11a-decahydro-4H-cyclopenta[a]cyclopropa[f][11]annulen-4-one (C20H30O5) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C20H30O5 |
| Molecular Weight | 350.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1983 |
Recommended Standards
- 1,4-Bis(sec-butylamino)anthracene-9,10-dione (CAS 19756-53-7)
- Andropanolide (CAS 869807-57-8)
- D-Phenothrin (CAS 188023-86-1)
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- 3-Hydroxy-2-methylbutanenitrile (CAS 38046-46-7)
- 898751-64-9 3-(3-Chloro-5-fluorophenyl)-1-cyclopropylpropan-1-one DTXSID40644982 (CAS 898751-64-9)
- (-)-Calanolide A (CAS 163661-45-8)
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- 2-((2-(Thiophen-2-yl)ethyl)thio)pyrimidine-4,6-diamine (CAS 1333913-43-1)
- 4-({[4-Fluoro-3-(trifluoromethyl)phenyl]methyl}(3-methyl-1-benzothiophen-2-yl)sulfamoyl)benzoic acid (CAS 1104625-59-3)
- Dibenzyl 2-((R)-1-(((S)-3,3-dimethyl-1-(methylamino)-1-oxobutan-2-yl)amino)-4-methyl-1-oxopentan-2-yl)-2-hydroxymalonate (CAS 191792-11-7)
- 3-(dimethyl-4H-1,2,4-triazol-3-yl)aniline (CAS 1247670-36-5)
- D-Pro36-Tirzepatide (CAS CATO-CPTD788903)
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