3-(1-Ethyl-5-methyl-1h-pyrazol-4-yl)-1-phenyl-1h-pyrazole-4-carboxylic acid CAS 1006348-70-4
| CAS No. | 1006348-70-4 |
| Molecular Formula | C16H16N4O2 |
| Molecular Weight | 296.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(1-Ethyl-5-methyl-1h-pyrazol-4-yl)-1-phenyl-1h-pyrazole-4-carboxylic acid (CAS 1006348-70-4) is a high-purity analytical reference standard with the molecular formula C16H16N4O2 and a molecular weight of 296.32 g/mol.
The molecular framework of 3-(1-Ethyl-5-methyl-1h-pyrazol-4-yl)-1-phenyl-1h-pyrazole-4-carboxylic acid (C16H16N4O2) 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. 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.
CATO manufactures 3-(1-Ethyl-5-methyl-1h-pyrazol-4-yl)-1-phenyl-1h-pyrazole-4-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H16N4O2 |
| Molecular Weight | 296.32 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 3-(1-Ethyl-3-methyl-1h-pyrazol-4-yl)-1-phenyl-1h-pyrazole-4-carboxylic acid (CAS 1006320-04-2)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com