(5β)-21-(Acetoxy)pregnane-3,20-dione CAS 2402-25-7
| CAS No. | 2402-25-7 |
| Molecular Formula | C23H34O4 |
| Molecular Weight | 374.51 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.
(5β)-21-(Acetoxy)pregnane-3,20-dione (CAS 2402-25-7), molecular formula C23H34O4 and molecular weight 374.51 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (5β)-21-(Acetoxy)pregnane-3,20-dione (C23H34O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 374.51 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C23H34O4 |
| Molecular Weight | 374.51 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Acetoxy Standards
- 3β-Acetoxy-17,17-(ethylenedioxy)androst-5-ene (CAS 17921-59-4)
- 3β-Acetoxy-17-hydroxypregn-5-en-20-one (CAS 1863-39-4)
- (Z)-4-Acetoxy-3-(4-(methylsulfonyl) phenyl)-2-phenylbut-2-enoic acid (CAS 179174-79-9)
- 3-Acetoxy Bromazepam (1.0mg/ml in Acetonitrile) (CAS 13132-88-2)
- 11-Acetoxy-Δ9-tetrahydrocannabinol (CAS 26108-47-4)
- 4-(4-Acetoxy-3-iodobenzal)-2-methyl-5-oxazolone (CAS 91719-58-3)
- Ethyl 4-acetoxy-7-bromo-1-methyl-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxylate (CAS 863444-64-8)
- Methyl 2-(2-acetoxy-6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-(2-chlorophenyl)acetate (CAS 178688-44-3)
Recommended Standards
- 2-(2-(2-(Hexanoyloxy)ethoxy)ethoxy)ethyl octanoate (CAS 72063-60-6)
- Amisulpride-d (CAS 1794786-83-6)
- 21-Acetoxypregnenolone (CAS 566-78-9)
- 5-PREGNEN-3β, 17-DIOL-20-ONE 3-ACETATE (CAS 41906-06-3)
- 2,5-Diamino-6-((2-hydroxyethyl)amino)-3-methylpyrimidin-4(3H)-one (CAS 61693-32-1)
- 3-Iodo-4-((2-methylbenzyl)oxy)benzonitrile (CAS 1706459-22-4)
- tert-Butyl (2S,4R)-2-ethynyl-4-hydroxypyrrolidine-1-carboxylate (CAS 275387-80-9)
- Tirofiban Impurity 24 (CAS 149490-61-9)
- 4-Bromo-1-ethyl-5-(trifluoromethyl)-1h-pyrazole (CAS 1249968-22-6)
- 6-Amino-5-bromo-2-(difluoromethyl)nicotinonitrile (CAS 1805256-51-2)
- 2-Methyl-N-((2-(pyrrolidin-1-yl)pyrimidin-5-yl)methyl)propan-1-amine (CAS 1279211-92-5)
- 5-(Methoxycarbonyl)-1-benzofuran-2-carboxylic acid (CAS 251457-26-8)
- N1-(2-Bromo-4-(trifluoromethyl)phenyl)-N2,N2-dimethylethane-1,2-diamine (CAS 1547425-86-4)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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