1-(4-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid CAS 15966-70-8
| CAS No. | 15966-70-8 |
| Molecular Formula | C9H6N4O4 |
| Molecular Weight | 234.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H6N4O4, 1-(4-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 234.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-(4-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid (CAS 15966-70-8), molecular formula C9H6N4O4 and molecular weight 234.17 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C9H6N4O4 |
| Molecular Weight | 234.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 4 |
Related Nitrophenyl Standards
- 3-(3-Nitrophenyl)isoxazole-5-carboxylic acid (CAS 1022083-09-5)
- 2-(2-Nitrophenyl)oxazole-4-carboxylic acid (CAS 1220040-17-4)
- 5-(2-Nitrophenyl)isoxazole-3-carboxylic Acid (CAS 1232028-11-3)
- 1-(2-Nitrophenyl)-1H-1,2,3-triazole-5-carboxylic acid (CAS 1266982-78-8)
- 2-(4-Nitrophenyl)oxazole-4-carboxylic acid (CAS 1457898-81-5)
- 1-(3-Nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 944905-90-2)
- 1-(4-Nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 4600-06-0)
- 3-(4-Nitrophenyl)isoxazole-5-carboxylic acid (CAS 899820-05-4)
Recommended Standards
- 5-(hydroxymethyl)-2-(trifluoromethyl)-Benzoic acid methyl ester (CAS 1567667-05-3)
- Ethyl 2-hydroxy-6-(trifluoromethyl)benzoate (CAS 161125-58-2)
- methyl 2-hydroxy-2-[4-(trifluoromethyl)phenyl]acetate (CAS 156276-22-1)
- Ethyl 3-hydroxy-2-(trifluoromethyl)benzoate (CAS 161125-59-3)
- 1-(2-Ethoxyphenyl)piperazine hydrochloride (CAS 83081-75-8)
- Pseudolaric acid A (CAS 82508-32-5)
- 2-Bromo-4-chloro-5-methylbenzonitrile (CAS 2092187-93-2)
- 2-(5-Iodo-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)acetic acid (CAS 57846-83-0)
- N-butyroÂylmorpholine (CAS 5327-51-5)
- (S)-N,N-dimethyl-2-(pyrrolidin-2-yl)ethan-1-amine (CAS 1315359-43-3)
- 6-Cyclopropyl-2-imino-2,3-dihydropyrimidin-4(1h)-one (CAS 21573-08-0)
- 4,5-Dihydroxypentane-2,3-dione (CAS 142937-55-1)
- Riociguat Impurity 2 (CAS 1361569-10-9)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com