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1, 2, 4-Benzenetriol Pyrogallol CAS 533-73-3 Hair Dye Intermediate 1, 2, 4 -Trihydroxybenzene, Find Details and Price about 1 2 4-Trihydroxybenzene 1 2 4 Trihydroxybenzene Hair Dye from 1, 2, 4-Benzenetriol Pyrogallol CAS 533-73-3 Hair Dye Intermediate 1, 2, 4 -Trihydroxybenzene - Labeyond Chemicals Co., Ltd.