3-Phenyl-4-(phenylamino)-1H-1,2,4-triazol-5(4H)-one CAS 57735-14-5
| CAS No. | 57735-14-5 |
| Molecular Formula | C14H12N4O |
| Molecular Weight | 252.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Phenyl-4-(phenylamino)-1H-1,2,4-triazol-5(4H)-one (CAS 57735-14-5), molecular formula C14H12N4O and molecular weight 252.27 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Phenyl-4-(phenylamino)-1H-1,2,4-triazol-5(4H)-one (C14H12N4O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C14H12N4O |
| Molecular Weight | 252.27 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.) | 1973 |
| Nitrogen Atoms | 4 |
Related Phenyl Standards
- 3-Methyl-2-(phenylamino)quinazolin-4(3H)-one (CAS 14505-32-9)
- 1-Methyl-4-(phenylamino)quinazolin-2(1H)-one (CAS 92554-69-3)
- 1-Phenyl-2-(phenylamino)-1H-imidazol-4(5H)-one (CAS 33532-91-1)
- 1-Phenyl-3-(phenylamino)-1H-pyrazol-5(4H)-one (CAS 7186-66-5)
- 4-((Phenylamino)methyl)phthalazin-1(2H)-one (CAS 303995-47-3)
- 1-Methyl-3-(phenylamino)-2,3-dihydroquinazolin-4(1H)-one (CAS 95757-92-9)
- (3Z)-3-[(Phenylamino)methylidene]-1,3-dihydro-2-benzothiophen-1-one (CAS 1164546-11-5)
- 4-(Phenylamino)quinazoline-2(1h)-thione (CAS 35696-83-4)
Recommended Standards
- 3-Phenyl-1-(pyridin-3-yl)pyrrolidine-2,5-dione (CAS 69537-45-7)
- 4-((Cyano(phenyl)methyl)amino)benzoicacid (CAS 88170-04-1)
- 3-Methyl-N-(1H-pyrazolo[3,4-b]pyridin-4-yl)benzamide (CAS 370589-13-2)
- 4-((tert-butoxycarbonylamino)methyl)picolinic acid (CAS 260970-57-8)
- (2S)-3-methoxybutan-2-amine hydrochloride (CAS 1799286-29-5)
- Quinolin-8-yl dihydrogen phosphate (CAS 7220-39-5)
- 6-Fluoro-1-methyl-1H-indazole-7-carboxylic acid (CAS 1537363-52-2)
- 7-Chloro-N-(4-methylbenzyl)quinazolin-4-amine (CAS 477861-84-0)
- 1-Ethyl-3-guanidinothiourea hydrochloride (CAS 381670-29-7)
- 2-(Ethyl(1-methylpiperidin-3-yl)amino)acetic acid (CAS 1353952-70-1)
- 1-(2-Ethoxy-3-methoxyphenyl)-N-methylmethanamine hydrochloride (CAS 1048947-99-4)
- 4-Chloro-1-(2-methoxyphenyl)butan-1-one (CAS 40877-17-6)
- 1-(2-chloro-4-fluorophenyl)-1H-1,2,3-triazole-4-carbaldehyde (CAS 1423028-05-0)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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