1-(3,4-Dihydroxybenzyliden)amino-3,3-diaethyl-5-methyl-2,4-piperidindion [German] 2,4-Piperidinedione, 1-(((3,4-dihydroxyphenyl)methylene)amino)-3,3-diethyl-5-methyl- (9CI) 2,4-Piperidinedione, 3,3-diethyl-1-((3,4-dihydroxybenzylidene)amino)-5-methyl- 3,3-Diethyl-1-((3,4-dihydroxybenzylidene)amino)-5-methyl-2,4-piperidinedione 39844-59-2 5-21-09-00615 (Beilstein Handbook Reference) BRN 1497475