trifluoromethanesulfonic acid 5-(4-chlorobenzoyl)thiophen-2-yl ester
2-(2-azidophenyl)thiophene
Essigsaeure-(4-chlorphenyl)-(5-trifluormethansulfonyloxy-thiophen-2-yl)-methylester
Trifluormethansulfonsaeure-5-[(4-chlorphenyl)-hydroxymethyl]-thiophen-2-ylester