5-bromo-1,3-dimethyl-1H-pyrazole CAS 5744-70-7
| CAS No. | 5744-70-7 |
| Molecular Formula | C5H11BrN2 |
| Molecular Weight | 179.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-bromo-1,3-dimethyl-1H-pyrazole (C5H11BrN2) contains bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 179.06 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
5-bromo-1,3-dimethyl-1H-pyrazole (CAS 5744-70-7), molecular formula C5H11BrN2 and molecular weight 179.06 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H11BrN2 |
| Molecular Weight | 179.06 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 3-bromo-1,4-dimethyl-pyrazole (CAS 13745-59-0)
- 5-bromo-1,4-dimethyl-1H-pyrazole (CAS 1393583-34-0)
- 3-bromo-1,5-dimethyl-pyrazole (CAS 5744-80-9)
- 2-BROMO-3-PYRIDYLAMINE 2-BROMO-PYRIDINEAMINE 2-BROMOPYRIDIN-3-AMINE 3-Amino-2-bromopyridine 3-PYRIDINAMINE, 2-BROMO- 39856-58-1 ABBYPHARMA AP-16-5924 AS04696 (CAS 39856-58-1)
- 6-Bromo-2-hexanone (CAS 10226-29-6)
- 5-Bromo-3-methyl-2-pentanone (CAS 1115-56-6)
- 4-Bromo-2,2-dimethyltetrahydrofuran (CAS 1193-08-4)
- 4-Bromo-2-methyltetrahydro-2H-pyran (CAS 1344300-03-3)
Recommended Standards
- 4-(bromomethyl)pyrimidine (CAS 54198-78-6)
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- 2-Amino-4-bromopyridine 4-Bromo-2-pyridinamine 4-Bromo-2-amine-pyridine 4-Bromopyridin-2-ylamine 84249-14-9 (CAS 84249-14-9)
- 825620-24-4 7-Bromo-4-hydroxy-2-phenylquinoline MFCD11505233 (CAS 825620-24-4)
- 2-[1-(4-Phenylpiperazin-1-yl)ethylidene]-2,3-dihydro-1H-indene-1,3-dione (CAS 841208-01-3)
- Methyl 6-bromo-4-chloro-7-methoxyquinazoline-2-carboxylate (CAS 2883759-86-0)
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