1-Methyl-5-(trifluoromethyl)pyrazole CAS 153085-15-5
| CAS No. | 153085-15-5 |
| Molecular Formula | C5H5F3N2 |
| Molecular Weight | 150.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H5F3N2, 1-Methyl-5-(trifluoromethyl)pyrazole contains a nitrile group, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 150.10 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).
1-Methyl-5-(trifluoromethyl)pyrazole (CAS 153085-15-5), molecular formula C5H5F3N2 and molecular weight 150.10 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H5F3N2 |
| Molecular Weight | 150.10 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.) | 2000 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-Methyl-5-(trifluoromethyl)pyrazole (CAS 10010-93-2)
- 4-Methyl-3-(trifluoromethyl)-1h-pyrazole (CAS 153085-14-4)
- 1-Methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 154471-65-5)
- 1-Methyl-4-(trifluoromethyl)-1H-pyrazole (CAS 176214-16-7)
- 1-Methyl-4-(trifluoromethyl)-1H-imidazole (CAS 81769-69-9)
- 1-Methyl-5-(trifluoromethyl)-1H-imidazole (CAS 81769-70-2)
- 2-Methyl-4-(trifluoromethyl)furan (CAS 26431-54-9)
- 2-Methyl-4-(trifluoromethyl)imidazole (CAS 33468-67-6)
Recommended Standards
- 3,4-Difluoro-2,5-Thiophenedione (CAS 142453-19-8)
- Phthalic Acid Anhydride-13C2 (CAS 1239918-30-9)
- 3-(2,2,2-Trifluoroethyl)-1H-pyrazole (CAS 1946822-36-1)
- alpha-Ketoglutaric acid-[13C2,d2] (CAS 123953-28-6)
- Glymidine (CAS 339-44-6)
- 3-(Bromomethyl)-5-chlorobenzonitrile (CAS 1021871-36-2)
- 1-(3-Methoxyphenyl)-3-phenylurea (CAS 13142-83-1)
- 1-Methoxy-1H-benzo[d]imidazole-2-carbaldehyde (CAS 118500-15-5)
- Isopropyl 3-(furan-2-yl)acrylate (CAS 73698-54-1)
- 1,4-Dimethyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione (CAS 17754-76-6)
- (R)-3,3-Difluorocyclopentanamine Hydrochloride (CAS 1117936-64-7)
- Flucloxacillin Monohydrate EP Impurity I (CAS CATO-C4X-164719)
- 3-Cyclopropyl-1-(tetrahydro-2H-pyran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 1486485-57-7)
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