Methyl 4-(2,4-difluorophenyl)-2,4-dioxobutanoate

METHYL 4-(3,3,7,8-TETRAMETHYL-1-OXO-2,3,4,5,10,11-HEXAHYDRO-1H-DIBENZO[B,E][1,4]DIAZEPIN-11-YL)BENZOATE

METHYL 4-(4-CHLOROPHENYL)-2,7,7-TRIMETHYL-5-OXO-1,4,5,6,7,8-HEXAHYDRO-3-QUINOLINECARBOXYLATE

Methyl 4-(4-methoxyphenyl)-4-oxobutanoate

METHYL 4-(5-(3-CHLORO-4-METHYLPHENYL)-2-FURYL)-6-METHYL-2-OXO-1,2,3,4-TETRAHYDRO-5-PYRIMIDINECARBOXYLATE

methyl 4-(diphenylamino)-4-oxobutanoate

Methyl 4-Acetamido-2-methoxybenzoate

METHYL 4-BENZYLOXY-3-NITROBENZOATE

methyl 4-chloro-2-[(3-ethoxy-3-oxopropanoyl)amino]benzoate

Methyl 4-fluoro-2-hydroxybenzoate

Methyl 4-isocyanobenzoate

methyl 4-oxo-2,4-diphenylbutanoate

METHYL 4-TERT-BUTYL-3,5-DIAMINOBENZOATE DIHYDROCHLORIDE

Methyl 4,5-dimethoxy-2-nitrobenzoate

METHYL 5-([(2S)-2-[(TERT-BUTOXYCARBONYL)AMINO]-4-PENTENOYL]AMINO)-4-OXOPENTANOATE