4-Bromo 17-beta-Estradiol CAS 1630-83-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1630-83-7 |
| Molecular Formula | C18H23BrO2 |
| Molecular Weight | 351.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Bromo 17-beta-Estradiol (CAS 1630-83-7) pharmaceutical standards reference standard. Molecular formula: C18H23BrO2. Molecular weight: 351.28 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C18H23BrO2 |
| Molecular Weight | 351.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bromo Standards
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Recommended Standards
- (S)-2-Amino-3-(4-((diethoxyphosphoryl)difluoromethyl)phenyl)propanoic acid (CAS 160751-42-8)
- [4-(Hydroxymethyl)-1-[4-phenyl-6-(trifluoromethyl)pyrimidin-2-yl]-1H-1,2,3-triazol-5-yl]methanol (CAS 861210-55-1)
- 1,1-Dimethyl-3-(5-oxo-2-(trifluoromethyl)-5H-chromeno[2,3-b]pyridin-3-yl)urea (CAS 303995-23-5)
- 1-Cyclopropyl-3-(5-methylthiophen-2-yl)propane-1,3-dione (CAS 1340519-57-4)
- 2-Propenoic acid, 2-methyl-, dodecyl ester, polymer with 4-ethenylpyridine and tetradecyl 2-methyl-2-propenoate (CAS 125594-58-3)
- (2E)-2-{[(4-hydroxy-2-methylphenyl)amino]methylidene}-4,4-dimethyl-3-oxopentanenitrile (CAS 1025306-51-7)
- 6,7-Baccatin III (CAS 158830-50-3)
- 2-[cyclopentyl(methyl)amino]-2-methylpropanoic acid hydrochloride (CAS 1423034-86-9)
- 2-(4-Chlorophenyl)-8-ethylquinoline-4-carboxylic acid (CAS 590350-43-9)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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