3-(Difluoromethyl)-5-methyl-4,5-dihydro-1H-pyrazol-5-ol CAS 933768-35-5
| CAS No. | 933768-35-5 |
| Molecular Formula | C5H8F2N2O |
| Molecular Weight | 150.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-(Difluoromethyl)-5-methyl-4,5-dihydro-1H-pyrazol-5-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.
CATO supplies 3-(Difluoromethyl)-5-methyl-4,5-dihydro-1H-pyrazol-5-ol (CAS 933768-35-5), a certified reference material (molecular formula C5H8F2N2O, MW 150.13 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H8F2N2O, 3-(Difluoromethyl)-5-methyl-4,5-dihydro-1H-pyrazol-5-ol contains an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 150.13 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 | C5H8F2N2O |
| Molecular Weight | 150.13 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) | 2.0 |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Difluoromethyl Standards
- 2-(Difluoromethyl)cyclobutane-1-carboxylic acid (CAS 1421601-68-4)
- 3-(difluoromethyl)cyclobutanecarboxylic acid (CAS 1613330-49-6)
- 2-(difluoromethyl)furan-3-carbaldehyde (CAS 1706464-73-4)
- 1-(Difluoromethyl)cyclobutane-1-carboxylic acid (CAS 1773507-91-7)
- trans-3-(difluoromethyl)cyclobutanecarboxylic acid (CAS 1773508-02-3)
- 1-(Difluoromethyl)-1H-pyrazole-5-thiol (CAS 2923474-87-5)
- 2-(Difluoromethyl)thiazol-4-amine (CAS 930303-50-7)
- 3-(Difluoromethyl)isothiazol-5-amine (CAS 2270872-91-6)
Recommended Standards
- 3-(2-Pyrimidinyl)-2-propenoic acid (CAS 408533-41-5)
- 3-(Pyrimidin-4-yl)acrylic acid (CAS 857200-95-4)
- 3-(2-Nitroethenyl)pyridine (CAS 3156-52-3)
- 3-(Pyrimidin-5-yl)acrylic acid (CAS 40929-53-1)
- 3-Cyanobenzylzinc bromide 0.5 M in Tetrahydrofuran (CAS 117269-72-4)
- 2-Chloro-N-[2-oxo-2-(thiophen-2-yl)ethyl]acetamide (CAS 70996-66-6)
- 5-Bromo-6-methylpyrimidine-4-carboxylic acid (CAS 933683-74-0)
- (S)-(5-Bromo-2-fluoro-3-pyridyl)-cyclopropyl-methanamine (CAS 1259695-38-9)
- 5-Chloro-N-(piperidin-4-yl)pyridin-2-amine (CAS 1098350-66-3)
- Ethyl 2-(1H-1,2,4-triazol-1-yl)acetate (CAS 56563-01-0)
- 1-(2,4-Dichloro-5-isopropoxyphenyl)-5-(3,4-dichlorophenyl)-1H-tetrazole (CAS 338961-44-7)
- 3-(trifluoromethyl)imidazo[1,5-a]pyrazine (CAS 959238-36-9)
- Isavuconazole Impurity 145 (CAS CATO-C4X-1236145)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
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