1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-ol CAS 161038-53-5
| CAS No. | 161038-53-5 |
| Molecular Formula | C5H5F3N2O |
| Molecular Weight | 166.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-ol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-ol (CAS 161038-53-5) is a high-purity analytical reference standard with the molecular formula C5H5F3N2O and a molecular weight of 166.10 g/mol.
Based on its molecular formula C5H5F3N2O, 1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-ol contains an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 166.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C5H5F3N2O |
| Molecular Weight | 166.10 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.) | 2003 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related methyl Standards
- 5-Methyl-4-(trifluoromethyl)isoxazol-3-amine (CAS 1057339-97-5)
- 4-Methyl-5-(trifluoromethyl)isoxazol-3-amine (CAS 110234-47-4)
- 4-Methyl-3-(trifluoromethyl)isoxazol-5-amine (CAS 110234-58-7)
- 3-(Trifluoromethyl)-5,6-dihydropyrazin-2-ol (CAS 1225378-30-2)
- (5-(Trifluoromethyl)-1H-pyrazol-4-yl)methanol (CAS 1266112-11-1)
- 4-(Trifluoromethyl)-2H-1,3-oxazin-2-amine (CAS 1337880-26-8)
- (5-(Trifluoromethyl)isoxazol-3-yl)methanamine (CAS 1364678-08-9)
- 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5(4H)-one (CAS 1481-02-3)
Recommended Standards
- 1-(2,2,2-Trifluoroethyl)-1H-pyrazol-4-ol (CAS 1598936-56-1)
- (5-(Trifluoromethyl)-1H-pyrazol-3-yl)methanol (CAS 169213-73-4)
- 4-Methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-amine (CAS 1547010-07-0)
- (1-(Trifluoromethyl)-1H-pyrazol-4-yl)methanol (CAS 1706436-51-2)
- NSC 61610, >98% (CAS 27111-43-9)
- 1016790-80-9 N-(3-Amino-4-methylphenyl)-2-phenylacetamide (CAS 1016790-80-9)
- 5-Chloro-5-ethyl-1H-pyrrolo[3,2,1-ij]quinoline-4,6(2H,5H)-dione (CAS 144603-37-2)
- 3-(Cyclopropylamino)pyridazine-4-carboxylic acid (CAS 1509163-71-6)
- N-(4-(Dimethylamino)phenyl)-2-((4-ethyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 618412-18-3)
- 1-{7-bromopyrrolo[2,1-f][1,2,4]triazin-2-yl}ethan-1-amine (CAS 1367942-44-6)
- 4-(Boc-amino)octahydrocyclopenta[c]pyrrole (CAS 185693-12-3)
- (5-bromo-2-methoxypyridin-4-yl)boronic acid (CAS 957060-94-5)
- Methyl (1S,3R)-3-bromocyclopentane-1-carboxylate (CAS 2092549-27-2)
- FMRF-Like Neuropeptide (CAS 121801-61-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com