TETRAHYDROXYQUINONE, INDICATORTetrahydroxy-1,4-benzoquinoneTetroquinoneTetrahydroxy-1,4-benzenequinoneTetrahydroxyquinone四羟基醌四羟基-1,4-苯醌tetrahydroxy-1,4-benzoquinonetetrahydroxyquinone2,3,5,6-tetrahydroxy-2,5-cyclohexadiene-1,4-dionetetrahydroxy-1,4-benzoquinonetetrahydroxyparabenzoquinonetetrahydroxy-p-quinone2,3,5,6-tetrahydroxy-p-benzoquinonetetrahydroxy-p-benzoquinone