4-phenyl-1H-1,2,3-triazole-5-carboxylic acid CAS 842972-82-1
| CAS No. | 842972-82-1 |
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-phenyl-1H-1,2,3-triazole-5-carboxylic acid (CAS 842972-82-1) is a high-purity analytical reference standard with the molecular formula C9H7N3O2 and a molecular weight of 189.17 g/mol.
4-phenyl-1H-1,2,3-triazole-5-carboxylic acid (C9H7N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 4-phenyl-1H-1,2,3-triazole-5-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.
Physical & Chemical Properties
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 4-Oxo-4H-quinolizine-2-carboxylic acid (CAS 3243-73-0)
- 4-Phenylisoxazole-5-carboxylic acid (CAS 858490-03-6)
- 4-Oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamide (CAS 33359-76-1)
- 5-(2-Nitrophenyl)-1H-imidazole (CAS 51746-89-5)
- (1S)-1-[4-(methylsulfanyl)phenyl]ethan-1-ol (CAS 179613-06-0)
- tert-Butyl 6-chloro-4-oxospiro[chroman-2,4'-piperidine]-1'-carboxylate (CAS 1011482-37-3)
- (3S,4R)-3-fluoro-1-methylpiperidin-4-amine (CAS 1393461-44-3)
- 6-oxo-3-phenylpiperidine-3-carboxylic acid (CAS 46475-04-1)
- 2-(5-Chlorothiophen-2-yl)pentan-2-ol (CAS 1379366-54-7)
- 8-(tert-Butyldimethylsilyloxy)-1-octanol (CAS 91898-32-7)
- (S)-2-Hydroxy-2-phenylethyl 4-methylbenzenesulfonate (CAS 40435-14-1)
- (5-Bromo-2-iodophenyl)(phenyl)methanone (CAS 1421664-41-6)
- N-(5-Bromo-3-methyl-2-pyridinyl)-N-cyclohexyl-N-ethylamine (CAS 1220029-67-3)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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