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Hydroquinone (photographic ), hydroquinone, manganese carbonate, manganese sulfate, manganese sulfate (feed ), 2, (ethylsulfonyl), imidazo, [1, 2, A], pyridine, 3, sulfonamide, sulfosulfuron, 4, 6, dimethoxy, 2, (phenoxycarbonyl) aminopyrimidine.