3,5-Dibromo-5,6-dihydropyran-2-one CAS 137776-72-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 137776-72-8 |
| Molecular Formula | C5H4Br2O2 |
| Molecular Weight | 255.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dibromo-5,6-dihydropyran-2-one (CAS 137776-72-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H4Br2O2. Molecular weight: 255.89 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H4Br2O2 |
| Molecular Weight | 255.89 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
Related Dibromo Standards
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- 2,2-Dibromo-3-cyanopropionamide (CAS 143111-81-3)
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Recommended Standards
- 3,4-Dibromofuran-2,5-dione (CAS 1122-12-9)
- Dibenzo[b,d]furan-4,6-diyldiboronic acid (CAS 145238-17-1)
- 1-Bromo-2,3-dichloro-4-methoxybenzene (CAS 109803-52-3)
- 2-Bromo-1-(2-fluoro-4-hydroxy-5-methoxyphenyl)ethan-1-one (CAS 1065076-50-7)
- 4-(3-Hydroxypropyl)-2,3-dimethoxyphenol (CAS 106800-31-1)
- 1H-Pyrrolo[1,2-b]indazole (CAS 344793-57-3)
- N-(4-bromo-2-methylphenyl)furan-3-carboxamide (CAS 923750-16-7)
- 6-(chloromethyl)-3-fluoro-2-methylpyridine (CAS 1393574-65-6)
- 1-Benzyl-5-(4-fluorophenyl)-1h-imidazole-2-thiol (CAS 852399-72-5)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
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