1-(o-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-5-ol CAS 854678-04-9
| CAS No. | 854678-04-9 |
| Molecular Formula | C11H9F3N2O |
| Molecular Weight | 242.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H9F3N2O, 1-(o-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-5-ol contains a nitrogen-containing heterocyclic scaffold, 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 242.20 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-(o-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-5-ol (CAS 854678-04-9), molecular formula C11H9F3N2O and molecular weight 242.20 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 | C11H9F3N2O |
| Molecular Weight | 242.20 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related o Standards
- 1-(p-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-4-ol (CAS 119868-28-9)
- 2-(o-Tolyl)-5-(trifluoromethyl)-2H-1,2,3-triazol-4-amine (CAS 1707576-45-1)
- 2-(m-Tolyl)-5-(trifluoromethyl)-2H-1,2,3-triazol-4-amine (CAS 1707584-98-2)
- 2-(P-tolyl)-5-(trifluoromethyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 63695-47-6)
- 1-(p-Tolyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diol (CAS 1209777-97-8)
- 2-(p-Tolyl)-7,8-dihydro-3H-pyrano[4,3-d]pyrimidin-4(5H)-one (CAS 1450790-51-8)
- 2-(M-tolyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxylic acid (CAS 2416673-85-1)
- 7-(P-tolyl)thieno[3,2-d]pyrimidin-4-ol (CAS 1019152-04-5)
Recommended Standards
- 1-(4-(1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethan-1-ol (CAS 2228513-14-0)
- 1-{[3-(trifluoromethyl)phenyl]methyl}-1h-1,2,4-triazol-3-amine (CAS 832740-44-0)
- 1-(2-(Trifluoromethyl)-1H-benzo[d]imidazol-1-yl)propan-2-one (CAS 321980-88-5)
- 1-{1-ethyl-1H-pyrrolo[2,3-b]pyridin-3-yl}-2,2,2-trifluoroethan-1-one (CAS 860651-45-2)
- 2,4-Dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1000578-08-4)
- Ethyl 2-(4-(3-formyl-2,5-dimethyl-1H-pyrrol-1-yl)phenyl)acetate (CAS 928708-27-4)
- tert-Butyl 1,2,3,5-tetrahydrospiro[2-benzazepine-4,4'-piperidine]-1'-carboxylate (CAS 1160247-89-1)
- 5-(5-Chlorothiophen-2-yl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1339333-33-3)
- octahydrocyclopenta[c]pyrrole-1-carboxamide (CAS 1594674-13-1)
- 4-(Aminomethyl)piperidin-2-one (CAS 1234615-77-0)
- 4-(Benzo[d][1,3]dioxole-5-carbonyl)piperazin-2-one (CAS 1030820-72-4)
- 3-(2-Chloro-4-fluorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 1370418-86-2)
- 10-Methyl-2-(methylthio)pyrimido[4,5-b]quinolin-4(10H)-one (CAS 948578-68-5)
- Copper Peptide ·2 acetate salt (CAS 130120-57-9)
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