Synonyms: 1,2,3,4-Butanetetracarboxylic acid, tetrakis(1,2,2,6,6-pentamethyl-4-piperidinyl)ester;Tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate;Tetrakis-(1,2,2,6,6-pentamethyl-4-piperidinyl)-1,2,3,4-butanetetracarboxyla;1,2,3,4-Butanetetracarboxylic acid tetrakis(1,2,2,6,6-pentamethylpiperidin-4-yl) ester;Butane-1,2,3,4-tetracarboxylic acid tetrakis(1,2,2,6,6-pentamethyl-4-piperidinyl) ester