Answer: quinones

AnswerCrossword Clue
quinonesQUINONE, a crystalline derivative of aniline, also KINONE
quinonesyellow, crystalline, cyclic unsaturated diketone, C6H4O2, formed by oxidizing aniline or hydroquinone: used chiefly in photography and in tanning leather
quinonesany of a class of compounds of this type