4-Bromo-2-hydroxy-6-methylpyridine CAS 865156-59-8
| CAS No. | 865156-59-8 |
| Molecular Formula | C6H6BrNO |
| Molecular Weight | 188.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-2-hydroxy-6-methylpyridine.
4-Bromo-2-hydroxy-6-methylpyridine (CAS 865156-59-8) is a high-purity analytical reference standard with the molecular formula C6H6BrNO and a molecular weight of 188.02 g/mol.
Structurally, 4-Bromo-2-hydroxy-6-methylpyridine (C6H6BrNO) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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 188.02 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H6BrNO |
| Molecular Weight | 188.02 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.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4-Bromo-2-methoxypyridine (CAS 100367-39-3)
- 4-Bromo-2-methylpyridine 1-oxide (CAS 100367-74-6)
- 2-Bromo-5-methylpyridin-3-ol (CAS 1003711-30-5)
- 2-BROMO-5-HYDROXY-3-PICOLINE (CAS 1003711-43-0)
- 4-Bromo-3-methylpyridine 1-oxide (CAS 10168-58-8)
- 2-Bromo-5-methoxypyridine (CAS 105170-27-2)
- 4-Bromo-3-methoxypyridine (CAS 109911-38-8)
- 2-Bromo-4-hydroxymethylpyridine (CAS 118289-16-0)
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- 4-Bromo-1-methyl-1h-pyrrole-2-carbaldehyde (CAS 33694-79-0)
- 4-Bromo-5-methyl-1h-pyrrole-2-carbaldehyde (CAS 52115-67-0)
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