TY JOUR TI Synthesis and analysis of (2z)-4-(4-methylanilino)-4-oxobut-2-enoic acid KW p-toluidine KW maleic anhydride KW (2z)-4-(methylanilino)-4-oxobut-2-enoic acid KW IR and NMR1H- spectroscopy KW potentiometric titration KW metrological characteristics JO From Chemistry Towards Technology Step-By-Step AU Yusifova, Y.R. AU Gorjacheva, O.S. PY 2024 IS 5 PB Yaroslavl State Technical University