5-Bromo-1H-imidazo[4,5-b]pyridine CAS 28279-52-9
| CAS No. | 28279-52-9 |
| Molecular Formula | C6H4BrN3 |
| Molecular Weight | 198.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Bromo-1H-imidazo[4,5-b]pyridine 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.
5-Bromo-1H-imidazo[4,5-b]pyridine (CAS 28279-52-9), molecular formula C6H4BrN3 and molecular weight 198.02 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Bromo-1H-imidazo[4,5-b]pyridine (C6H4BrN3) contains a nitrile group, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 198.02 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.
Physical & Chemical Properties
| Molecular Formula | C6H4BrN3 |
| Molecular Weight | 198.02 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 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.) | 1965 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
- 2-Bromo-[1,2,4]triazolo[1,5-a]pyridine (CAS 1021019-03-3)
- 7-Bromo-[1,2,4]triazolo[1,5-a]pyridine (CAS 1053655-66-5)
- 6-Bromo-1,2-benzisoxazole (CAS 1060802-88-1)
- 7-Bromo-[1,2,3]triazolo[1,5-a]pyridine (CAS 107465-26-9)
- 6-Bromo-[1,2,4]triazolo[4,3-a]pyridine (CAS 108281-79-4)
- 4-Bromo-1H-imidazo[4,5-c]pyridine (CAS 1086398-12-0)
- 8-Bromo[1,2,4]triazolo[4,3-a]pyridine (CAS 1126824-74-5)
- 5-Bromo-4-methylpyrimidine-2-carbonitrile (CAS 114969-80-1)
Recommended Standards
- 5-Bromo-1,2-benzisoxazole (CAS 837392-65-1)
- 5-Bromo-1H-pyrazolo[3,4-c]pyridine (CAS 929617-35-6)
- 5-Amino-3-bromopicolinonitrile (CAS 573762-88-6)
- 5-Bromo-2-hydroxybenzonitrile (CAS 40530-18-5)
- Phosphatidylinositol 4,5-bisphosphate diC8 (PI(4,5 (CAS 204858-53-7)
- 9-Oxa-1,4-diaza-spiro[5.5]undecan-5-one (CAS 1250833-07-8)
- iSo-AdP-ribose (CAS 15720-01-1)
- N-((5-methylthiophen-2-yl)methyl)prop-2-en-1-amine (CAS 893569-89-6)
- 3-Bromo-2-hydroxybenzamide (CAS 28165-47-1)
- 4-(4-Chlorophenyl)-2-hydrazinylpyrimidine (CAS 932240-84-1)
- (2-Chloro-6-methylphenyl)methanamine hydrochloride (CAS 1314979-09-3)
- (R)-2-tert-butyl-6-methyl-1,3-dioxin-4-one (CAS 107289-20-3)
- N-(2-Methoxyethyl)-5-methylquinazolin-4-amine (CAS 819793-33-4)
- Semaglutide (CAS 910463-68-2（free base）)
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