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Chemical structure of aniline enaminone analogs. The difference among the three mono methyl compounds is the anilino substitution represented by meta-Chloro; para-Fluoro, and para-trifluoro. E139 is a para-bromo anilino enaminone derivative with a methyl ester substituted moiety at cyclohexenone and Compound 30 is the benzylamino analog. From [18].
