N-benzoyl-N-(3-carboxy-propyl)-anthranilic acid
methyl 2-[(4-ethoxy-4-oxobutyl)(methyl)amino]benzoate
N-(3-carboxy-propyl)-anthranilic acid
N-(3-ethoxycarbonyl-propyl)-N-(toluene-4-sulfonyl)-anthranilic acid methyl ester
Aethyl-N-(1,2-bismethoxycarbonylvinyl)-4-(O-methoxycarbonylanilino)butyrat