90-82-4
Pseudoephedrine
+
123-62-6
丙酸酐
→
~94%
159213-03-3
(1S,2S)-(+)-伪麻黄碱丙酰胺
79-03-8
丙酰氯
~92%
554-12-1
丙酸甲酯
~86%