3,5-Dibromo-2-methylpyridine CAS 38749-87-0
| CAS No. | 38749-87-0 |
| Molecular Formula | C6H5Br2N |
| Molecular Weight | 250.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3,5-Dibromo-2-methylpyridine (CAS 38749-87-0), a certified reference material (molecular formula C6H5Br2N, MW 250.92 g/mol) for analytical method development and quality control.
Owing to a nitrile group, bromine substitution, an aromatic ring system, 3,5-Dibromo-2-methylpyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 250.92 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C6H5Br2N |
| Molecular Weight | 250.92 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 methanol, acetonitrile, DMSO |
| 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.) | 1968 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Dibromo Standards
- 3,4-Dibromo-2-methylpyridine, 97% (CAS 1188140-60-4)
- 4,5-Dibromo-2-methylpyridine (CAS 1247348-33-9)
- 2,4-Dibromo-3-methylpyridine (CAS 128071-93-2)
- 2,3-Dibromo-4-methylpyridine (CAS 871483-22-6)
- 2,3-Dibromo-5-methylpyridine (CAS 29232-39-1)
- 2,3-DIBROMO-6-PICOLINE (CAS 261373-04-0)
- 2,4-Dibromo-5-methylpyridine (CAS 79055-50-8)
- 2,4-Dibromo-6-methylpyridine (CAS 79055-52-0)
Recommended Standards
- 3,4-Dibromoaniline (CAS 615-55-4)
- 3,5-Dibromo-4-methylpyridine (CAS 3430-23-7)
- 2-Bromo-6-(bromomethyl)pyridine, 97% (CAS 83004-10-8)
- 3,6-Dibromo-2-methylpyridine (CAS 39919-65-8)
- 4'-((3,5-Dicarboxyphenyl)carbamoyl)-[1,1'-biphenyl]-3,5-dicarboxylic acid (CAS 2380036-45-1)
- n-(1,1-Dioxo-1λ6-thiolan-3-yl)-2-(piperazin-1-yl)acetamide dihydrochloride (CAS 1315369-09-5)
- 4-(Cyclopentyloxy)-2-hydroxybenzaldehyde (CAS 1196474-82-4)
- 1,1,1-Trifluoro-3-thiomorpholinopropan-2-ol (CAS 478068-13-2)
- tert-Butyl (2S,5S)-2,5-bis(2,2,2-trifluoroethyl)piperazine-1-carboxylate (CAS 1260588-12-2)
- PF8380 (CAS 1144035-53-9)
- 1-[2-(Trifluoromethyl)phenyl]ethane-1,2-diamine (CAS 1154898-91-5)
- 3-(4-Bromophenyl)-1-(2-chlorophenyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-68-4)
- 7-Amino-4-methyl-1H-indole-3-carbonitrile (CAS 289483-87-0)
- CGMP Dependent Kinase Inhibitor Peptide (CAS 82801-73-8)
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