5-Bromo-1H-imidazol-2-amine CAS 1211524-33-2
| CAS No. | 1211524-33-2 |
| Molecular Formula | C3H4BrN3 |
| Molecular Weight | 161.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Bromo-1H-imidazol-2-amine (CAS 1211524-33-2), molecular formula C3H4BrN3 and molecular weight 161.99 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Bromo-1H-imidazol-2-amine (C3H4BrN3) is characterized by a nitrile group, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Bromo-1H-imidazol-2-amine 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.
Physical & Chemical Properties
| Molecular Formula | C3H4BrN3 |
| Molecular Weight | 161.99 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
- 3-Bromo-1H-pyrazol-5-amine (CAS 1203705-55-8)
- 4-Bromo-1H-pyrazol-1-amine (CAS 122481-11-2)
- 4-Bromo-1-methyl-1,2,3-triazole (CAS 13273-53-5)
- 2-Bromo-1H-imidazol-4-amine (CAS 1373233-52-3)
- 3-Bromo-5-methyl-1H-1,2,4-triazole (CAS 15777-57-8)
- 3-Bromo-4-methyl-4H-1,2,4-triazole (CAS 16681-73-5)
- 1-Bromo-1H-pyrazol-5-amine (CAS 1823380-61-5)
- 3-Bromo-5-methyl-1H-1,2,4-triazole (CAS 26557-90-4)
Recommended Standards
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- 5-BROMOMETHYL-ISOXAZOLE (CAS 69735-35-9)
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