Synonyms: 2-Butenedioicacid (2Z)-, 2-[[[(2Z)-3-carboxy-1-oxo-2-propenyl]oxy]methyl]-2-ethyl-1,3-propanediylester (9CI); 2-Butenedioic acid (Z)-,2-[[(3-carboxy-1-oxo-2-propenyl)oxy]methyl]-2-ethyl-1,3-propanediyl ester,(Z)-; Maleic acid, ester with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1)(8CI); 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, tris(hydrogen maleate)(8CI); Trimethylolpropane trimaleate