178408-09-8 4,4-Dimethyl-N-((4-methoxyphenyl)thioxomethyl)-3-oxopentanamide Pentanamide, 4,4-dimethyl-N-((4-methoxyphenyl)thioxomethyl)-3-oxo- tert-Butyl ester of N-para-methoxythiobenzoylmalonamic acid