60437-30-1
1-苄基-4-羟基哌啶-4-羧酸甲酯
+
624-83-9
异氰酸甲酯
→
26786-44-7
8-benzyl-3-methyl-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione
26733-62-0
77-78-1
硫酸二甲酯