N-(4-oxocyclohexa-2,5-dien-1-ylidene)benzenesulfonamide

4-chloro-N-(4-hydroxyphenyl)benzenesulfonamide

4-methyl-N-(4-oxocyclohexa-2,5-dien-1-ylidene)benzenesulfonamide

N-(4-hydroxyphenyl)-4-methylbenzenesulfonamide

N-p-tolylsulfonyl-2-chloro-1,4-benzoquinone imine