3,5-Dibromo-1-methylpyrazin-2-one CAS 87486-34-8
| CAS No. | 87486-34-8 |
| Molecular Formula | C5H4Br2N2O |
| Molecular Weight | 267.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dibromo-1-methylpyrazin-2-one (CAS 87486-34-8) is a high-purity analytical reference standard with the molecular formula C5H4Br2N2O and a molecular weight of 267.91 g/mol.
Structurally, 3,5-Dibromo-1-methylpyrazin-2-one (C5H4Br2N2O) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 267.91 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3,5-Dibromo-1-methylpyrazin-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 | C5H4Br2N2O |
| Molecular Weight | 267.91 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 3,5-Dibromo-2-methoxypyrazine (CAS 1207853-31-3)
- 4,5-Dibromo-2-methylpyridazin-3(2H)-one (CAS 13645-74-4)
- 2,5-Dibromo-3-methoxypyrazine (CAS 489431-66-5)
- 2,5-Dibromo-4-methoxypyrimidine (CAS 89284-12-8)
- 4,5-Dibromo-1-methyl-1H-imidazole-2-carbaldehyde (CAS 79326-92-4)
- 3,4-Dibromo-5-fluorotoluene (CAS 1000576-19-1)
- 1,4-Dibromo-2-fluoro-3-methylbenzene (CAS 1000576-44-2)
- 1,2-Dibromo-5-fluoro-3-methylbenzene (CAS 1000576-64-6)
Recommended Standards
- 3,5-Dibromopyrazine-2,6-diamine (CAS 58885-20-4)
- (3,6-Dibromopyrazin-2-yl)methanol (CAS 1270497-52-3)
- 2-Amino-3,5-dibromopyridin-4-ol (CAS 1261269-58-2)
- 4,5-Dibromofuran-2-carboximidamide (CAS 1247444-20-7)
- 3-(1,3-Dioxolan-2-yl)aniline (CAS 6398-87-4)
- 5,5-Dimethylhexanoic acid, 97% (CAS 24499-80-7)
- 2-Bromo-N,N-diethylethanamine (CAS 5392-81-4)
- 4-Phenyl-3-(trifluoromethyl)pyridine (CAS 1803844-39-4)
- 2-(6-Methoxy-1H-indol-3-yl)acetonitrile (CAS 23084-35-7)
- Methyl 2-(4-(3-chloropropanamido)phenoxy)benzoate (CAS 866020-20-4)
- 1-((2,5-Dimethoxyphenyl)sulfonyl)-4-(2-fluorophenyl)piperazine (CAS 681844-72-4)
- 3-Bromo-5-(3-phenyl-1H-pyrazol-5-yl)pyridine (CAS 1147879-59-1)
- H-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu-Leu-Tyr-Tyr-Ser-OH (CAS 110200-37-8)
- D-[Phe]6-Liraglutide (CAS CATO-C4X-199235)
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