ETHYL 4-{[TERT-BUTYL(DIPHENYL)SILYL]OXY}BUTANOATE

ETHYL 4-((N-DODECYL)ANILINO)BUTYRATE

Ethyl 4-(2-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate

ETHYL 4-(2,5-DIFLUOROPHENYLUREIDO)BENZOATE

ETHYL 4-(3-(4-CHLORO-2-NITROPHENYL)UREIDO)BENZOATE

ETHYL 4-(3,3-DICYCLOHEXYLUREIDO)BENZOATE

Ethyl 4-(4-chlorophenyl)-2-(4-fluorophenyl)thiazole-5-carboxylate

Ethyl 4-(4-fluorophenyl)-2-isothiocyanato-3-thiophenecarboxylate

ethyl 4-(aminosulfonyl)benzoate

ETHYL 4-(TERT-BUTOXYCARBONYL)-2-(ETHOXYCARBONYL)-5-METHYL-3-PYRROLEPROPIONATE

Ethyl 4-amino-3-ethoxybenzoate

ethyl 4-butyl-3-hydroxy-5-methyl-1H-pyrrole-2-carboxylate

Ethyl 4-chloro-8-methoxyquinoline-3-carboxylate

ethyl 4-formyl-2,5-dimethyl-1-phenyl-1H-pyrrole-3-carboxylate

ETHYL 4-HYDROXYOXANILATE