5α-Pregnane-3α,17α-diol-20-one CAS 6890-65-9
| CAS No. | 6890-65-9 |
| Molecular Formula | C21H34O3 |
| Molecular Weight | 334.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5α-Pregnane-3α,17α-diol-20-one (CAS 6890-65-9), molecular formula C21H34O3 and molecular weight 334.49 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5α-Pregnane-3α,17α-diol-20-one (C21H34O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 334.49 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures 5α-Pregnane-3α,17α-diol-20-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H34O3 |
| Molecular Weight | 334.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Pregnane Standards
- (3α,5β)-Pregnane-3,20,21-triol (CAS 2041-77-2)
- 5a-Pregnane-3a,20a-diol (CAS 566-58-5)
- 5α-Pregnane-3β,20(S)-diol (CAS 566-56-3)
- 5β-Pregnane-3β,20(S)-diol (CAS 80-90-0)
- 5Beta-Pregnane-3Alpha,20Alpha-Diol (CAS 80-92-2)
- 5α-Pregnane-3-one-20α-ol (CAS 516-59-6)
- (5α)-Pregnane-3,20-dione Cyclic 20-(1,2-Ethanediyl Acetal) (CAS 1452-23-9)
- Pregnane-d4 (CAS 205529-77-7)
Recommended Standards
- 5-PREGNEN-3β, 16α, 20α-TRIOL (CAS 3885-13-0)
- 5β-PREGNAN-3α, 11β-DIOL-20-ONE (CAS 565-92-4)
- 5a-Pregnan-3b,17a-diol-20-one (CAS 570-54-7)
- 5β-PREGNAN-3α, 17-DIOL-20-ONE (CAS 570-52-5)
- 2-Butyl-1,3,6,2-dioxazaborocane (CAS 92527-13-4)
- <I>N</I>,<I>N</I>′-dimethyl-1,6-hexanediamine (CAS 13093-04-4)
- 1-(4h-1,2,4-Triazol-3-yl)propan-1-amine hydrochloride (CAS 1333802-64-4)
- 2-(5-((3-(3-Chloro-4-ethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid (CAS 956958-57-9)
- Venetoclax Impurity 53 (CAS CATO-C4X-249553)
- ML355 (CAS 1532593-30-8)
- 2-(Difluoromethyl)-6-hydroxyquinoline (CAS 1261746-45-5)
- 6-(5-Amino-3-methyl-1H-pyrazol-1-yl)-1-(3-chlorophenyl)-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 1172953-98-8)
- 3-Acetyl-2,6-dichloropyridine (CAS 412018-50-9)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
Why CATO?
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