5-PREGNEN-3β, 11β, 17, 20β-TETROL CAS 19516-75-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 19516-75-7 |
| Molecular Formula | C21H34O4 |
| Molecular Weight | 350.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-PREGNEN-3β, 11β, 17, 20β-TETROL (CAS 19516-75-7), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C21H34O4. Molecular weight: 350.49 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C21H34O4 |
| Molecular Weight | 350.49 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.) | 1962 |
Related PREGNEN Standards
- 4-PREGNEN-17, 20β, 21-TRIOL-3-ONE (CAS 128-19-8)
- 4-PREGNEN-17, 20α, 21-TRIOL-3-ONE (CAS 3946-10-9)
- 4-PREGNEN-6β, 21-DIOL-3, 20-DIONE (CAS 298-65-7)
- 5-PREGNEN-6, 16α-DIMETHYL-3β-OL-20-ONE (CAS 5888-08-4)
- 5-PREGNEN-16, 17-EPOXY-16β-METHYL-3β-OL-20-ONE (CAS 1922-48-1)
- 4-PREGNEN-1α, 11β, 21-TRIOL-3, 20-DIONE (CAS 10163-49-2)
- 4-PREGNEN-17, 19, 21-TRIOL-3, 20-DIONE (CAS 510-65-6)
- 4-PREGNEN-17, 20α, 21-TRIOL-3, 11-DIONE (CAS 566-38-1)
Recommended Standards
- Xylyl Dibutylbenzofuranone (CAS 181314-48-7)
- 17-Deoxycortolone (CAS 600-68-0)
- 5,7-Di-tert-butyl-3-(2,3-dimethylphenyl)benzofuran-2(3H)-one (CAS 169198-26-9)
- Azido-PEG8-C1-NHS ester (CAS 2182601-81-4)
- 3-(Trifluoromethyl)-1H-indazole (CAS 57631-05-7)
- Aluminium trifluoroacetate (CAS 36554-89-9)
- 3-(3-tert-Butyl-5-methyl-7-oxo-7H-furo[3,2-g]-chromen-6-yl)propanoic acid (CAS 777857-43-9)
- 2-(4-tert-butoxycarbonyl-1,4-oxazepan-6-yl)acetic acid (CAS 2418669-31-3)
- 1-Nitro-4-[(1s,4r)-4-butylcyclohexyl]benzene (CAS 1881275-84-8)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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