Ethyl 5-hydroxy-4-methyl-1-(p-tolyl)-1H-pyrazole-3-carboxylate CAS 274253-18-8

Description

The occurrence of Ethyl 5-hydroxy-4-methyl-1-(p-tolyl)-1H-pyrazole-3-carboxylate 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.

Ethyl 5-hydroxy-4-methyl-1-(p-tolyl)-1H-pyrazole-3-carboxylate (CAS 274253-18-8), molecular formula C14H16N2O3 and molecular weight 260.29 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Ethyl 5-hydroxy-4-methyl-1-(p-tolyl)-1H-pyrazole-3-carboxylate (C14H16N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 260.29 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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

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