1-(4-Nitrophenyl)-5-phenyl-1H-1,2,3-triazole-4-carboxylic acid CAS 1236-33-5
| CAS No. | 1236-33-5 |
| Molecular Formula | C15H10N4O4 |
| Molecular Weight | 310.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(4-Nitrophenyl)-5-phenyl-1H-1,2,3-triazole-4-carboxylic acid 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.
1-(4-Nitrophenyl)-5-phenyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 1236-33-5), molecular formula C15H10N4O4 and molecular weight 310.26 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H10N4O4, 1-(4-Nitrophenyl)-5-phenyl-1H-1,2,3-triazole-4-carboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 310.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C15H10N4O4 |
| Molecular Weight | 310.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
Related Nitrophenyl Standards
- 2-(2-(2-Nitrophenyl)-2-oxoethyl)isoindoline-1,3-dione (CAS 861379-38-6)
- 1,3-Bis(4-Nitrophenyl)Urea-D8 (CAS 1156508-87-0)
- 4-Nitrophenyl (tert-butoxycarbonyl)-D-alaninate (CAS 85546-27-6)
- Ethyl 2-(3-nitrophenyl)indolizine-1-carboxylate (CAS 478033-90-8)
- (2-(1-Methyl-3-(3-nitrophenyl)-1H-1,2,4-triazol-5-yl)phenyl)methanol (CAS 61610-57-9)
- 1-{[4-(4-Nitrophenyl)phenyl]carbonyl}piperidine (CAS 1355246-86-4)
- N-(2-nitrophenyl)-1-phenylcyclopentane-1-carboxamide (CAS 337497-32-2)
- N-(3-nitrophenyl)-1-phenylcyclopentane-1-carboxamide (CAS 328964-80-3)
Recommended Standards
- 4'-(2H-Tetrazol-5-yl)-[1,1'-biphenyl]-3,5-dicarboxylicacid (CAS 1159595-96-6)
- 2-(2-(5-Nitrofuran-2-yl)vinyl)quinoline-8-carboxylic acid (CAS 13022-19-0)
- 5-Bromo-1-((trimethylsilyl)oxy)-2,3-dihydro-1H-indene-1-carbonitrile (CAS 1132943-65-7)
- 5-((4-Carboxyphenyl)ethynyl)isophthalicacid (CAS 1311146-60-7)
- 3-Iodo-4-(trifluoromethyl)benzyl bromide (CAS 1261482-51-2)
- 1,3,6,8-Tetra(1H-imidazol-1-yl)pyrene (CAS 2247718-42-7)
- 1,2,2,5-Tetramethylpiperidin-3-one (CAS 103634-60-2)
- (S)-2-((tert-Butoxycarbonyl)amino)-6-phenylhexanoic acid (CAS 150722-68-2)
- 4-(4-Bromophenyl)pyrimidine (CAS 53975-33-0)
- N,3,5-trimethylisoxazole-4-carboxamide (CAS 478031-36-6)
- Br In Water (CAS CATO-CCRM106096)
- N-(2,5-dichlorophenyl)-4-methoxybenzamide (CAS 7465-94-3)
- 2-(4-Methyl-1,2,5-oxadiazol-3-yl)-1-morpholinoethanethione (CAS 352349-19-0)
- Tau Peptide (277-291) trifluoroacetate salt (CAS 330456-40-1)
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