5-chloro-4-ethylsulfanyl-2-methylpyridazin-3-one
5-chloro-4-(ethylsulfanyl)-2-methyl-3(2H)-pyridazinone 5-chloro-4-(ethylthio)-2-methyl-pyridazin-3-one 5-chloro-4-ethylsulfanyl-2-methyl-2H-pyridazin-3-one
5-chlor-4-ethylsulfanyl-2-methylpyridazin-3-on 5-chloro-4-éthylsulfanyl-2-méthylpyridazin-3-one 5-クロロ-4-エチルスルファニル-2-メチルピリダジン-3-オン
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