1,4-NAPHTHOQUINONE, 2,3,4a,5,8,8a-HEXAHYDRO- 1,4-Naphthalenedione, 2,3,4a,5,8,8a-hexahydro- (9CI) 2,3,4a,5,8,8a-Hexahydro-1,4-naphthoquinone 54963-84-7 NSC 142690