5-Bromo-3-isopentyl-2-methyl-3H-imidazo[4,5-b]pyridine CAS 1263281-65-7
| CAS No. | 1263281-65-7 |
| Molecular Formula | C12H16BrN3 |
| Molecular Weight | 282.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Bromo-3-isopentyl-2-methyl-3H-imidazo[4,5-b]pyridine (CAS 1263281-65-7), a certified reference material (molecular formula C12H16BrN3, MW 282.18 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H16BrN3, 5-Bromo-3-isopentyl-2-methyl-3H-imidazo[4,5-b]pyridine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 282.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H16BrN3 |
| Molecular Weight | 282.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- N-(2-Bromocyclopent-2-en-1-yl)-3-methoxy-N-methylaniline (CAS 1257649-70-9)
- 2-Bromo-1-(3,4-dihydroquinolin-1(2H)-yl)butan-1-one (CAS 1283274-46-3)
- 7-Bromo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine hydrobromide (CAS 34968-20-2)
- Ciproquinate (CAS 19485-08-6)
- 6-Amino-1-ethyl-4-((4-((4-((1-ethylpyridin-1-ium-4-yl)amino)phenyl)carbamoyl)phenyl)amino)quinolin-1-ium bromide (CAS 42013-69-4)
- (1S,2S)-2-AminocyclohexanolHCl (CAS 13374-30-6)
- 2-(3-Formyl-5-(methoxycarbonyl)phenyl)acetic acid (CAS 1393585-56-2)
- N-((R)-1-((S)-2-Amino-3-methylbutanoyl)pyrrolidin-3-yl)-N-ethylacetamide (CAS 1401665-75-5)
- Ethyl 3-(4-fluorophenyl)-2-methylbutanoate (CAS 2107198-78-5)
- N-Allyl-2-aminobenzamide (CAS 4943-82-2)
- Ethyl 5-cyclopropyl-4-methyl-1H-pyrazole-3-carboxylate (CAS 1445831-52-6)
- Semaglutide (CAS 910463-68-2（free base）)
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