chlorohydroquinone

[ klawr-uh-hahy-droh-kwi-nohn, klohr- ]
/ ˌklɔr əˌhaɪ droʊ kwɪˈnoʊn, ˌkloʊr- /

noun

a white to light-tan, crystalline, water-soluble solid, C6H3Cl(OH)2, used chiefly in organic synthesis and as a developer in photography.

Origin of chlorohydroquinone