[4-(2,6-dichlorophenylamino)-thiophen-3-yl]acetic acid (7R,8R,9R)-3-chloro-7-(2-methoxyethoxy)-2-methyl-9-phenyl-7H-8,9-dihydropyrano[2,3-c]imidazo[1,2-a]pyridine-8-yl ester 、
草酸 以
异丙醇 为溶剂,
生成 [4-(2,6-dichlorophenylamino)-thiophen-3-yl]acetic acid (7R,8R,9R)-3-chloro-7-(2-methoxyethoxy)-2-methyl-9-phenyl-7H-8,9-dihydropyrano[2,3-c]imidazo[1,2-a]pyridine-8-yl ester; salt with oxalic acid