TETRAHYDROXYQUINONE, INDICATORTetrahydroxy-1,4-benzoquinoneTetroquinoneTetrahydroxy-1,4-benzenequinoneTetrahydroxyquinone四羟基醌四羟基-1,4-苯醌2,3,5,6-tetrahydroxy-2,5-cyclohexadiene-1,4-dionetetrahydroxyquinonetetrahydroxy-1,4-benzoquinonetetrahydroxy-1,4-benzoquinonetetrahydroxyparabenzoquinonetetrahydroxy-p-quinonetetrahydroxy-p-benzoquinone2,3,5,6-tetrahydroxy-p-benzoquinone