-azine/heterocyclic compound containing nitrogen in their ring such as pyridine 吡啶 [bi3 ding4] C5H5N, pyrazine 噠嗪|哒嗪 [da1 qin2] C4H4N2 or pyrimidine 嘧啶 [mi4 ding4] C4H4N2
2
qin2
-azine/heterocyclic compound containing nitrogen in their ring such as pyridine 吡啶 [bi3 ding4] C5H5N, pyrazine 噠嗪|哒嗪 [da1 qin2] C4H4N2 or pyrimidine 嘧啶 [mi4 ding4] C4H4N2