(RS)-((RS)-1-phenyl-ethyl)-succinic acid-anhydride

1-trimethylsilylpyrrole-2,5-dione

(E)-4-[(1-ethoxy-4-methyl-1-oxopentan-2-yl)amino]-4-oxobut-2-enoic acid

4-(4-methoxyanilino)-4-oxobutanoic acid

(E)-N,N'-bis(4-methoxyphenyl)but-2-enediamide