4-Cyano-5-methyl-1-phenyl-1H-pyrazole CAS 18093-88-4
| CAS No. | 18093-88-4 |
| Molecular Formula | C11H9N3 |
| Molecular Weight | 183.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Cyano-5-methyl-1-phenyl-1H-pyrazole 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.
4-Cyano-5-methyl-1-phenyl-1H-pyrazole (CAS 18093-88-4), molecular formula C11H9N3 and molecular weight 183.21 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Cyano-5-methyl-1-phenyl-1H-pyrazole (C11H9N3) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H9N3 |
| Molecular Weight | 183.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- ((2R,5S)-5-(3-methyl-1,2,4-oxadiazol-5-yl)tetrahydrofuran-2-yl)methanamine (CAS 1808784-70-4)
- 3-Methyl-1-phenyl-1H-pyrazole-4-carbonitrile (CAS 18093-92-0)
- 4-(Dimethoxymethyl)-N-methylpyrimidin-2-amine (CAS 180869-38-9)
- 1-(p-Tolyl)-1H-imidazole-4-carbonitrile (CAS 181947-74-0)
- 5-fluoro-2-[2-(trimethylsilyl)ethynyl]pyridine (CAS 884494-40-0)
- N-(9-((2-Hydroxyethoxy)methyl)-9H-purin-6-yl)benzamide (CAS 72710-11-3)
- 2-(1-Hydroxy-2-methylpropan-2-yl)-4,4-dimethyloxazol-5(4H)-one (CAS 650625-35-7)
- Tert-butyl 2-(2-(4-methoxyphenyl)-1-((2,2,2-trifluoroethyl)imino)ethyl)hydrazine-1-carboxylate (CAS 1053657-61-6)
- 2-(3-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethan-1-ol (CAS 2101295-16-1)
- 4-Chloro-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine, 97% (CAS 57564-94-0)
- Pranoprofen Impurity N3 (CAS 52549-07-2)
- 2-((3-Cyano-6-methyl-4-(trifluoromethyl)pyridin-2-yl)thio)-N-(4-fluorophenyl)acetamide (CAS 445222-40-2)
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- Insulin Degludec Impurity 7 (CAS CATO-C4X-21577)
Why CATO?
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