149-30-4
2-巯基苯并噻唑
→
120600-74-0
S-2-benzothiazolyl-4-ethyl-2,3-dioxo-1-piperazinethio-carboxylate
+
59703-00-3
4-乙基-2,3-二氧-1-哌嗪甲酰氯
75-44-5
光气
59702-31-7
N-乙基-2,3-二酮哌嗪