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Pyrazophos .svg validSVG Structure of ethyl diethoxyphosphorothioyl oxy methylpyrazolo apyrimidinecarboxylate Own Emeldir no ODiethyl thionophosphoryl methylcarbethoxypyrazolo apyrimidine Diethoxyphosphinothioyl oxymethylpyrazolo apyrimidinecarboxylic acid ethyl ester hydroxymethylpyrazolo apyrimidinecarboxylic acid ethyl ester