2-Bromo-3,5-dimethylpyridine 1-oxide CAS 220770-67-2
| CAS No. | 220770-67-2 |
| Molecular Formula | C7H8BrNO |
| Molecular Weight | 202.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Bromo-3,5-dimethylpyridine 1-oxide (CAS 220770-67-2) is a high-purity analytical reference standard with the molecular formula C7H8BrNO and a molecular weight of 202.05 g/mol.
Based on its molecular formula C7H8BrNO, 2-Bromo-3,5-dimethylpyridine 1-oxide contains an amide 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 202.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2-Bromo-3,5-dimethylpyridine 1-oxide 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 | C7H8BrNO |
| Molecular Weight | 202.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
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- 5-Bromo-N-ethylpyrazin-2-amine (CAS 1001050-18-5)
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- 6-Bromo-N,N-dimethylpyrazin-2-amine (CAS 1027512-51-1)
- 5-Bromo-2,3-dimethylpyridine 1-oxide (CAS 103971-30-8)
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- 2-Bromo-4,6-dimethylpyridin-3-ol (CAS 1062541-68-7)
Recommended Standards
- 2-Bromo-3-(methoxymethyl)pyridine (CAS 932042-99-4)
- 2-Bromo-3-ethoxypyridine (CAS 89694-54-2)
- 2-Bromo-1-(1-methyl-1H-pyrrol-3-yl)ethanone (CAS 220270-63-3)
- 2-Bromo-3-methoxy-6-methylpyridine (CAS 24207-22-5)
- n-Methyl-1-(4,5,6,7-tetrahydrobenzo[b]thiophen-3-yl)methanamine (CAS 1312132-21-0)
- 3-Benzyl-1,3-thiazolidine-2,4-dione (CAS 37868-80-7)
- Bicyclo[3.1.1]heptan-2-ol, 2,6,6-trimethyl-, (1R,2S,5S)-rel- (CAS 4948-28-1)
- (Z)-2-(4-(tert-Butyl)benzylidene)-6-hydroxy-7-((4-(2-hydroxyethyl)piperazin-1-yl)methyl)benzofuran-3(2H)-one (CAS 1177494-33-5)
- N-(2-methylbenzo[d]oxazol-6-yl)methanesulfonamide (CAS 156244-61-0)
- Bis(2-furyl)chlorophosphine (CAS 181257-35-2)
- 5-Amino-1-(2,2,2-trifluoroethyl)-1h-pyrazole-4-carboxamide (CAS 1082745-57-0)
- tert-Butyl (5-bromo-4-(4-(trifluoromethyl)thiazol-2-yl)pyridin-2-yl)carbamate (CAS 1186111-35-2)
- 3-Methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboxamide (CAS 89179-80-6)
- Liraglutide Sodium Salt (CAS 204656-20-2（free base）)
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