1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one CAS 100553-83-1
| CAS No. | 100553-83-1 |
| Molecular Formula | C10H9FN2O |
| Molecular Weight | 192.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 100553-83-1), a certified reference material (molecular formula C10H9FN2O, MW 192.19 g/mol) for analytical method development and quality control.
1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one (C10H9FN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H9FN2O |
| Molecular Weight | 192.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1985 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluorophenyl Standards
- (3-(4-Fluorophenyl)-1h-pyrazol-4-yl)methanol (CAS 1017783-51-5)
- (5-(4-Fluorophenyl)isoxazol-3-yl)methanamine (CAS 1018604-92-6)
- [3-(3-fluorophenyl)-1,2-oxazol-5-yl]methanamine (CAS 1033693-12-7)
- 1-(2-fluorophenyl)-3-prop-2-yn-1-ylurea (CAS 1090922-05-6)
- (3-(4-Fluorophenyl)-1h-pyrazol-5-yl)methanol (CAS 1137165-21-9)
- [1-(4-fluorophenyl)-1h-pyrazol-3-yl]methanol (CAS 1202942-29-7)
- 1-(4-Fluorophenyl)-1H-pyrazole-3,5-diamine (CAS 1248501-80-5)
- (1-(2-Fluorophenyl)-1h-1,2,3-triazol-4-yl)methanamine (CAS 1250180-52-9)
Recommended Standards
- Methotrexate Impurity 30 (CAS 881-33-4)
- Methotrexate EP Impurity A (CAS 945-24-4)
- Fluconazole Impurity 69 (CAS 98414-56-3)
- 5-Amino-3-(3-fluoro-4-methylphenyl)isoxazole (CAS 1020955-76-3)
- 1H-indazole-4-carboxamide, n-methoxy-n-methyl- (CAS 926004-22-0)
- 2,6-Difluoro-N-(3-hydroxycyclohexyl)benzenesulfonamide (CAS 1396783-17-7)
- 3-(3-Bromophenoxy)-N,N-dimethylpropan-1-amine (CAS 912569-57-4)
- 2-(2-Iodophenyl)quinazolin-4-amine (CAS 62786-13-4)
- N-Benzyl-2-[(2-chlorophenyl)sulfanyl]-N-methylacetamide (CAS 339097-69-7)
- tert-Butyl 1-oxo-2,7-diazaspiro[4.5]decane-7-carboxylate (CAS 923009-50-1)
- ((1aR,6aR)-4-Methylenehexahydrocyclopropa[b]pyrrolizin-5a(3H)-yl)methanol (CAS 2856019-34-4)
- 2-(4-Fluorophenyl)-1-(6-methylpyridin-2-yl)ethanone (CAS 476472-56-7)
- 5-Methoxy-2,2-dimethylpyrrolidine-1-carbaldehyde (CAS 159174-42-2)
- GnRH Associated Peptide (GAP) (1-13), human (CAS 100111-07-7)
Why CATO?
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