4-amino-N-pyrazin-2-ylbenzenesulfonamide

2-(3-chloropyrazin-1-ium-1-yl)-1-(4-fluorophenyl)ethanone,bromide

3-氯吡嗪-2-甲醛

4-(2-吡嗪)苯甲酸

2-pyrazin-2-yloxyethanamine