3-Bromo-2-ethylpyridine CAS 38749-81-4
| CAS No. | 38749-81-4 |
| Molecular Formula | C7H8BrN |
| Molecular Weight | 186.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Bromo-2-ethylpyridine (CAS 38749-81-4) is a high-purity analytical reference standard with the molecular formula C7H8BrN and a molecular weight of 186.05 g/mol.
Based on its molecular formula C7H8BrN, 3-Bromo-2-ethylpyridine contains a nitrile group, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 186.05 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.
Physical & Chemical Properties
| Molecular Formula | C7H8BrN |
| Molecular Weight | 186.05 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 |
| 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 Bromo Standards
- 4-Bromo-3-ethylpyridine (CAS 10168-60-2)
- 2-bromo-5-fluoro-1,3-thiazole (CAS 1209458-83-2)
- 2-Bromo-3-ethylpyridine (CAS 142337-94-8)
- 142337-95-9 3-bromo-5-ethylpyridine DTXSID80349065 (CAS 142337-95-9)
- 4-Bromo-2-ethylpyridine (CAS 156761-88-5)
- 3-Bromo-2,5-dimethylpyridine (CAS 17117-19-0)
- 4-Bromo-2,5-dimethylpyridine (CAS 17117-23-6)
- 2-Bromo-3,4-dimethylpyridine (CAS 33204-85-2)
Recommended Standards
- 3-(1-Bromoethyl)pyridine (CAS 562074-53-7)
- 3-Bromo-4,5-dimethylpyridine (CAS 27063-98-5)
- 2-Bromobenzylamine (CAS 3959-05-5)
- 3-Bromo-4-ethylpyridine (CAS 38749-76-7)
- 4,6-Dimethylbenzo[d]thiazol-2-amine (CAS 64036-71-1)
- Bibs 39 (CAS 133085-33-3)
- tert-Butyl 5-(hydroxymethyl)isoindoline-2-carboxylate (CAS 253801-14-8)
- Thieno[3,2-d]pyrimidin-2-ylmethanol (CAS 77294-16-7)
- N-(4-Chlorophenyl)chromane-3-carboxamide (CAS 932964-96-0)
- 5-(3-Fluorophenyl)furan-2-carbaldehyde (CAS 33342-18-6)
- 3-(3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl)propan-1-amine (CAS 926212-94-4)
- 5-Chloro-2-fluoro-4-iodopyridine (CAS 659731-48-3)
- 3-(5-Methyl-2-pyrazinyl)-1-phenyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine (CAS 1353497-63-8)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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