3,4-Dibromo-1,5-dimethyl-1h-pyrazole CAS 5775-95-1
| CAS No. | 5775-95-1 |
| Molecular Formula | C5H6Br2N2 |
| Molecular Weight | 253.92 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.
CATO supplies 3,4-Dibromo-1,5-dimethyl-1h-pyrazole (CAS 5775-95-1), a certified reference material (molecular formula C5H6Br2N2, MW 253.92 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H6Br2N2, 3,4-Dibromo-1,5-dimethyl-1h-pyrazole contains a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 253.92 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C5H6Br2N2 |
| Molecular Weight | 253.92 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 3,5-Dibromo-1,4-dimethyl-1H-pyrazole (CAS 134589-54-1)
- 3,5-Dibromo-1-ethyl-1H-pyrazole (CAS 1596745-76-4)
- 4,5-Dibromo-1,2-dimethyl-1H-imidazole (CAS 16954-05-5)
- 2,4-Dibromo-1,5-dimethyl-1H-imidazole (CAS 850429-57-1)
- 2,5-Dibromo-1,4-dimethyl-1H-imidazole (CAS 850429-58-2)
- 4,5-Dibromo-1,3-dimethyl-1H-pyrazole (CAS 5744-71-8)
- 4,5-Dibromo-2-ethyl-1H-imidazole (CAS 4002-82-8)
- 1,3-Dibromo-5-fluorobenzene (CAS 1435-51-4)
Recommended Standards
- (S)-2-(4-(2,4-Dichlorophenoxy)butanamido)-3-(1H-indol-3-yl)propanoic acid (CAS 5462-19-1)
- 4-Bromo-1-(2-bromoethyl)-1H-pyrazole (CAS 214614-82-1)
- Tetrachlorothiophene Dioxide (CAS 72448-17-0)
- Tris(2,2-difluoroethyl) borate (CAS 1396338-09-2)
- 2-((7-Chloro-5-nitroquinolin-8-yl)oxy)acetonitrile (CAS 88757-71-5)
- 4-{2-[3,5-bis(4-fluorophenyl)pyrazolo[1,5-a]pyrimidin-6-yl]ethyl}morpholine (CAS 861207-16-1)
- 3-(5-Formylpyridin-3-yl)benzonitrile (CAS 887973-56-0)
- 475481-99-3 4-(Chloromethyl)-2-(2-methoxyphenyl)-5-methyl-1,3-oxazole MFCD08457264 (CAS 475481-99-3)
- 4-(4-Chloro-5-methyl-3-nitro-1H-pyrazol-1-yl)butanoic acid (CAS 696646-61-4)
- Ethyl 2-(benzo[d]thiazol-2-ylthio)acetate (CAS 24044-88-0)
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- Liraglutide(8-31)TFA Salt (CAS CATO-C4X-19922)
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