(E)-4,4,4-trifluoro-3-methylbut-2-enoic acid 3-(Trifluoromethyl)crotonic acid 69056-67-3 CAS 69056-67-3

Description

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.

(E)-4,4,4-trifluoro-3-methylbut-2-enoic acid 3-(Trifluoromethyl)crotonic acid 69056-67-3 (CAS 69056-67-3) is a high-purity analytical reference standard with the molecular formula C5H5F3O2 and a molecular weight of 154.09 g/mol.

Structurally, (E)-4,4,4-trifluoro-3-methylbut-2-enoic acid 3-(Trifluoromethyl)crotonic acid 69056-67-3 (C5H5F3O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 154.09 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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