19384-19-1
1-ethyl-3-pyridin-3-ylthiourea
→
~89%
62638-69-1
N-ethyl-[1,3]thiazolo[5,4-b]pyridin-2-amine
6298-19-7
3-氨基-2-氯吡啶
+
542-85-8
乙基乙酸丙烯酯