5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE CAS 651-43-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 651-43-4 |
| Molecular Formula | C21H34O5 |
| Molecular Weight | 366.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE (CAS 651-43-4), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C21H34O5. Molecular weight: 366.49 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C21H34O5 |
| Molecular Weight | 366.49 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1957 |
Related PREGNAN Standards
- 5α-Pregnan-11β,17α,21-triol-3,20-dione-1,2,4,5-d4 (CAS 252976-11-7)
- 5α-Pregnan-17α¸21-diol-3¸11¸20-trione-1¸2¸4¸5-d4 (CAS 1482-51-5)
- 5β-PREGNAN-3α, 11β, 17, 20α-TETROL (CAS 1242-48-4)
- 5α-PREGNAN-3β, 11β, 20β, 21-TETROL (CAS 7285-27-0)
- 5β-PREGNAN-3α, 11β, 17, 20β-TETROL (CAS 2434-06-2)
- 5α-PREGNAN-3β, 11β, 21-TRIOL-20-ONE (CAS 516-16-5)
- 5α-PREGNAN-3β, 17, 21-TRIOL-20-ONE (CAS 516-47-2)
- 5α-PREGNAN-17, 21-DIOL-3, 20-DIONE (CAS 312-99-2)
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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 13829788188 / jacky.chen@cato-chem.com