2,5-Dihydro-6-Hydroxy-3-Mercapto-2-Methyl-5-oxo-1,2,4-Triazine ( TTZ , Thiotriazinone );2-Methyl-5,6-dioxo-1,2,5,6-tetrahydro-1,2,4-triazine-3-thiol;
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