6-Methyl-2-thiouracil6-Methyl-2-thioxo-1,2,3,4-tetrahydropyrimidin-4-one4-Hydroxy-2-mercapto-6-methylpyrimidineMethylthiouracil6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one4-Hydroxy-6-methyl-2-thiopyrimidine4-Hydroxy-2-mercapto-6-methylpyrimidine6-甲基-2-硫脲嘧啶6-甲基-2-硫脲嘧啶4-Hydroxy-2-mercapto 6-methylpyrimidine4-羟基-2-巯基-6-甲基嘧啶4-羟基-2-巯基-6-甲基嘧啶MZU甲基硫脲嘧啶6-Methyl-2-thiouracil6-Methyl-2-thiouracil