Ethyl 5-bromo-1-(4-nitrophenyl)-1H-pyrazole-3-carboxylate CAS 1269294-13-4

Description

Structurally, Ethyl 5-bromo-1-(4-nitrophenyl)-1H-pyrazole-3-carboxylate (C12H10BrN3O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 340.13 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Ethyl 5-bromo-1-(4-nitrophenyl)-1H-pyrazole-3-carboxylate (CAS 1269294-13-4) is a high-purity analytical reference standard with the molecular formula C12H10BrN3O4 and a molecular weight of 340.13 g/mol.

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

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