3-Phenyl-5-(p-tolyl)-1H-1,2,4-triazole CAS 33140-05-5
| CAS No. | 33140-05-5 |
| Molecular Formula | C15H13N3 |
| Molecular Weight | 235.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Phenyl-5-(p-tolyl)-1H-1,2,4-triazole.
3-Phenyl-5-(p-tolyl)-1H-1,2,4-triazole (CAS 33140-05-5), molecular formula C15H13N3 and molecular weight 235.28 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H13N3, 3-Phenyl-5-(p-tolyl)-1H-1,2,4-triazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 235.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H13N3 |
| Molecular Weight | 235.28 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3-Oxo-2,4-diphenylbutanenitrile (CAS 25369-03-3)
- 3-tert-Butyl-5-methylcarboxylate benzamide3-carbamoyl-5-tert-butyl-methyl Benzoate (CAS 885518-18-3)
- 3-Nitro-4-(4-methylpiperidine-1-yl)aniline (CAS 84979-31-7)
- 4-((2-Isopropylphenyl)amino)-4-oxobutanoic acid (CAS 448250-78-0)
- 5-bromo-7-iodo-1H-indazole (CAS 953410-86-1)
- (E)-1-(4-methyl-2-phenylthiazol-5-yl)-3-(3-(trifluoromethyl)phenyl)prop-2-en-1-one (CAS 860610-04-4)
- 2-Phenyl-2H-1,2,3-triazole-4-carboxylic acid (CAS 13306-99-5)
- 4-(4-hydroxyphenoxy)-3-methylbenzamide (CAS 1179251-46-7)
- N-(4-(4-Methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzamide (CAS 1396782-24-3)
- Pentafluorophenylhydrazine hydrochloride (CAS 1514-49-4)
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- 5-Amino-1-(2-(2-hydroxyethoxy)ethyl)-4-methylpyridin-2(1h)-one (CAS 1525759-55-0)
- 6-(1H-Indol-3-yl)-3-phenyl-1,2,4-triazin-5(2H)-one (CAS 193764-35-1)
- Vancomycin Hexapeptide (CAS 115236-65-2)
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