3,5-Dichloro-1-methyl-6-(thiophen-2-yl)pyrazin-2(1H)-one
N-(3-Cyano-4,5-dimethylthiophen-2-yl)pyrazine-2-carboxamide
5-(Thiophen-2-yl)pyrazin-2(1H)-one
5-(Thiophen-3-yl)pyrazin-2-amine
2-Chloro-5-(2-thienyl)pyrazine
2-(Thiophen-2-yl)pyrazine
