1-Tert-butyl-3-(2-ethoxyphenyl)-1h-pyrazole-4-carboxylic acid CAS 1152891-41-2
| CAS No. | 1152891-41-2 |
| Molecular Formula | C16H20N2O3 |
| Molecular Weight | 288.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Tert-butyl-3-(2-ethoxyphenyl)-1h-pyrazole-4-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-Tert-butyl-3-(2-ethoxyphenyl)-1h-pyrazole-4-carboxylic acid (CAS 1152891-41-2) is a high-purity analytical reference standard with the molecular formula C16H20N2O3 and a molecular weight of 288.34 g/mol.
1-Tert-butyl-3-(2-ethoxyphenyl)-1h-pyrazole-4-carboxylic acid (C16H20N2O3) contains a nitrogen-containing heterocyclic scaffold, 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-Tert-butyl-3-(2-ethoxyphenyl)-1h-pyrazole-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.
Physical & Chemical Properties
| Molecular Formula | C16H20N2O3 |
| Molecular Weight | 288.34 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Recommended Standards
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