1,4,5-Triphenyl-1H-pyrazole CAS 36372-77-7
| CAS No. | 36372-77-7 |
| Molecular Formula | C21H16N2 |
| Molecular Weight | 296.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 296.37 g/mol gives 1,4,5-Triphenyl-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,4,5-Triphenyl-1H-pyrazole (CAS 36372-77-7), molecular formula C21H16N2 and molecular weight 296.37 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1,4,5-Triphenyl-1H-pyrazole (C21H16N2) 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. 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.
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 | C21H16N2 |
| Molecular Weight | 296.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 2 |
Related Triphenyl Standards
- 1,3,4-Triphenyl-1H-pyrazole (CAS 1666-85-9)
- 1,3,5-Triphenyl-1H-pyrazole (CAS 2183-27-9)
- 2,4,5-Triphenyl-4H-1,2,4-triazol-2-ium-3-ide (CAS 166773-08-6)
- 3,4,5-Triphenyl-4H-1,2,4-triazole (CAS 4073-72-7)
- 1,2,5-Triphenyl-1H-pyrrole (CAS 851-33-2)
- 1,3,5-Triphenyl-4,5-dihydro-1H-pyrazole (CAS 742-01-8)
- 2,4,5-Triphenyl-4,5-dihydro-1H-imidazole (CAS 37134-88-6)
- 3,4,5-Triphenyl-4,5-dihydroisoxazole (CAS 14659-67-7)
Recommended Standards
- 1,4-Diphenyl-5,8-dihydro-5,8-methanophthalazine (CAS 203982-88-1)
- [2-(4-Amino-phenyl)-6-methyl-imidazo[1,2-a]-pyridin-3-yl]-(2-methoxy-ethyl)-amine (CAS 842105-02-6)
- 2-(((5-Oxo-1-phenyl-2-thioxoimidazolidin-4-yl)methyl)thio)acetic acid (CAS 36301-90-3)
- [2-(4-Amino-phenyl)-5-methyl-imidazo[1,2-a]-pyridin-3-yl]-(2-methoxy-ethyl)-amine (CAS 919011-39-5)
- 3-Fluoro-2-(4-fluorophenyl)-6-(trifluoromethyl)pyridine (CAS 1214377-51-1)
- 3-Chloro-2-methylsulfonylnitrobenzene (CAS 91912-35-5)
- 1'-Benzyl-5-fluorospiro[1,2-dihydroindole-3,4'-piperidine] (CAS 1341040-27-4)
- 3-chloro-1-methyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 1781676-47-8)
- Pirenoxine (CAS 1043-21-6)
- 4-Chloro-5-(trimethylsilyl)thiophene-2-carbaldehyde (CAS 2092000-97-8)
- Bisoprolol EP Impurity A (CAS 62572-93-4)
- Cysteamine Bitartrate (CAS 27761-19-9)
- 1-(4-Ethylbenzyl)pyrrolidin-3-amine (CAS 1247475-05-3)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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