3,5-Dibromo-2H-pyran-2-one CAS 19978-41-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 19978-41-7 |
| Molecular Formula | C5H2Br2O2 |
| Molecular Weight | 253.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dibromo-2H-pyran-2-one (CAS 19978-41-7) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C5H2Br2O2. Molecular weight: 253.88 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C5H2Br2O2 |
| Molecular Weight | 253.88 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
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Recommended Standards
- 3,4-Dibromofuran-2-carbaldehyde (CAS 32460-03-0)
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- 4,5-dibromopyridazin-3[2h]-one (CAS 5788-58-9)
- Fenmetramide (CAS 5588-29-4)
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- Clemastine Fumarate Impurity 2 (CAS 530-48-3)
- 5-Chloro-6-methylimidazo[1,2-a]pyrazine (CAS 1823443-07-7)
- n-(2,6-Dimethoxybenzyl)cyclopropanamine (CAS 1094641-90-3)
- 4,5-Dichloropyrrole-2-carboxylic Acid (CAS 39209-94-4)
- Peptide 436 (CAS CATO-CPTD788436)
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