吡嗪-2,5-二羧酸二甲酯

2-溴-5-甲硫基吡嗪

2,5-bis(methylsulfanyl)pyrazine

2-溴-5-(4-甲基-1-哌嗪基)吡嗪

4-(5-溴-2-吡嗪)吗啉