75338-42-0
1-乙基-6,7,8-三氟-1,4-二氢-4-氧代喹啉-2-羧酸
+
141-43-5
乙醇胺
→
~91%
119052-76-5
1-ethyl-6,8-difluoro-7-(2-hydroxyethylamino)-4-oxoquinoline-3-carboxylic acid