2-Chloro-5-(3-ethoxycarbonylbenzoyl)pyridine

2-chloro-5-(7-chloroheptanoyl)pyridine

2-chloro-3-(6-chlorohexanoyl)pyridine

2-(4-nitrobenzoyl)thiophene

3-(4-cyanobenzoyl)thiophene

3-(2-cyanobenzoyl)thiophene

3-(3-Bromobenzoyl)thiophene

3-(4-Chlorobenzoyl)thiophene

3-(3-Chloro-4-fluorobenzoyl)thiophene

3-(3-Trifluoromethylbenzoyl)thiophene

3-(2,4-Difluorobenzoyl)thiophene