7-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine CAS 120633-31-0
| CAS No. | 120633-31-0 |
| Molecular Formula | C5H3BrN4 |
| Molecular Weight | 199.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine is closely related to a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 120633-31-0), molecular formula C5H3BrN4 and molecular weight 199.01 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H3BrN4, 7-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine contains a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 199.01 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.
As a certified reference material (CRM), 7-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine 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 | C5H3BrN4 |
| Molecular Weight | 199.01 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 |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Bromo Standards
- 7-Bromo-[1,2,3,4]tetrazolo[1,5-a]pyridine (CAS 1130816-25-9)
- 6-Bromo-[1,2,4]triazolo[4,3-b]pyridazine (CAS 115127-23-6)
- 8-Bromo-[1,2,4]triazolo[4,3-c]pyrimidine (CAS 1208084-77-8)
- 6-Bromo[1,2,4]triazolo[1,5-a]pyrazine (CAS 1233026-51-1)
- 3-Bromo-1H-pyrazolo[3,4-d]pyrimidine (CAS 1251033-27-8)
- 3-Bromo-1H-pyrazolo[3,4-c]pyridazine (CAS 1260741-42-1)
- 2-Bromo-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 1335054-80-2)
- 8-Bromo-[1,2,4]triazolo[4,3-a]pyrazine (CAS 1341878-31-6)
Recommended Standards
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- 4-[3-(Methylsulfonyl)phenyl]-1-propyl-1,2,3,6-tetrahydropyridine (CAS 346688-39-9)
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