14646-15-2 2,3-Pyrrolidinedione, 1-methyl-4-vanilliylidene- 2,3-Pyrrolidinedione, 1-methyl-4-vanilliylidene- (8CI) 2,3-Pyrrolidinedione, 4-((4-hydroxy-3-methoxyphenyl)methylene)-1-methyl- NSC 152104