1,4-Benzoquinone diazide 2,5-Cyclohexadien-1-one, 4-diazo- 4-Diazo-2,5-cyclohexadien-1-one 4-Diazoquinone 932-97-8 BRN 1859770 CCRIS 1275 Quinone diazide p-Benzoquinone diazide p-Diazoquinone p-Quinone diazide