Answer: quinone

AnswerCrossword Clue
quinoneyellow, crystalline, cyclic unsaturated diketone, C6H4O2, formed by oxidizing aniline or hydroquinone: used chiefly in photography and in tanning leather
quinonea crystalline derivative of aniline, also KINONE
quinoneany of a class of compounds of this type
quinoneeither of two isomeric cyclic crystalline compounds C6H4O2 that are derivatives of benzene