28920-43-6
氯甲酸-9-芴基甲酯
+
56210-05-0
(S)-4-((R)-1-(tert-butoxy)ethyl)oxazolidine-2,5-dione
→
125814-28-0
N-芴甲氧羰基-O-叔丁基-L-苏氨酸-N-酸酐