5-Acetyl-3-bromo-2H-pyran-2-one CAS 2092491-80-8
| CAS No. | 2092491-80-8 |
| Molecular Formula | C7H5BrO3 |
| Molecular Weight | 217.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Acetyl-3-bromo-2H-pyran-2-one (CAS 2092491-80-8), a certified reference material (molecular formula C7H5BrO3, MW 217.02 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H5BrO3, 5-Acetyl-3-bromo-2H-pyran-2-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 217.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 5-Acetyl-3-bromo-2H-pyran-2-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H5BrO3 |
| Molecular Weight | 217.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Br-containing |
Related Acetyl Standards
- 3-Bromo-6,7-dihydro-[1,4]dioxino[2,3-c]pyridazine (CAS 1003944-31-7)
- 6-Bromo-2H-oxazolo[3,2-a]pyrimidin-7(3H)-one (CAS 103022-66-8)
- 2-Bromo-5-nitroaniline (CAS 10403-47-1)
- (E)-3-(5-Bromo-2-furanyl)acrylic Acid (CAS 111252-31-4)
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Recommended Standards
- 5-(Bromomethyl)-2-pyrazinecarboxylic acid (CAS 782434-80-4)
- 5-Bromo-2,3-dihydroxybenzaldehyde (CAS 52924-55-7)
- 5-(Bromomethyl)-2-nitropyridine (CAS 448968-52-3)
- 5-Bromo-2H-1,3-benzodioxol-4-ol (CAS 82299-36-3)
- 3,3-Difluorocyclohexan-1-ol (CAS 94099-53-3)
- 2-Despiperidyl-2-Amino Repaglinide (CAS 874908-11-9)
- Trihexylphosphine (CAS 4168-73-4)
- 4-Bromo-N-(3-bromophenyl)benzenesulfonamide (CAS 349404-99-5)
- 1,2-Dichloro-1,1,2,3,3-pentafluoropropane (CAS 422-44-6)
- tert-butyl 2-methyl-6-(trifluoromethylsulfonyloxy)-3,4-dihydro-2H-pyridine-1-carboxylate (CAS 2883422-06-6)
- Butalamine-d4 (CAS 1794766-45-2)
- Potassium 5-sulfofuran-2-carboxylate (CAS 220717-46-4)
- 2-(3-Ethoxyphenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-amine (CAS 1352305-28-2)
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