1-Bromo-1,3-Butadiene CAS 21890-35-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21890-35-7 |
| Molecular Formula | C4H5Br |
| Molecular Weight | 132.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Bromo-1,3-Butadiene (CAS 21890-35-7) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C4H5Br. Molecular weight: 132.99 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C4H5Br |
| Molecular Weight | 132.99 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 3-Bromo-1-butyne (CAS 18668-72-9)
- (Z)-1-Bromo-1,3-Butadiene (CAS 56318-77-5)
- 1-Bromo-2-butyne (CAS 3355-28-0)
- 2-Bromo-2-butene, cis and trans mixture (CAS 13294-71-8)
- 3-Bromo-2-methylpropene (CAS 1458-98-6)
- 1-Bromo-1-methylcyclopropane (CAS 50915-27-0)
- 1-Bromo-2-Buten (CAS 29576-14-5)
- 1-Bromo-2-methylcyclopropane (CAS 52914-88-2)
Recommended Standards
- 3-Butynyl Bromide 38771-21-0 4-Bromo-1-butyne B3242 (CAS 38771-21-0)
- (E)-1-Bromobuta-1,3-diene (CAS 89567-73-7)
- 5-Fluorouracil-13C,15N2 (CAS 1189423-58-2)
- (1S,4s)-4-(methylsulfonyl)cyclohexan-1-amine hydrochloride (CAS 2230789-74-7)
- 3-Iodo-5-nitro-1H-pyrazolo[3,4-b]pyridine (CAS 1186609-70-0)
- 4-Morpholinecarboxylic Acid Isopropyl Ester (CAS 6298-77-7)
- 1-Bromo-4-methoxyisoquinoline (CAS 1421517-83-0)
- 1-(Benzenesulfonyl)-5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridine (CAS 1172067-98-9)
- 2-((4-Butyl-8-methyl-2-oxo-2h-chromen-7-yl)oxy)propanoic acid (CAS 438028-14-9)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
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