英文别名Regorafenib Impurity 6; 4-[4-({[4-Chloro-3-(trifluoromethyl)phenyl]carbamoyl}amino)-3-fluorophenoxy]-2-pyridinecarboxylic acid; Regorafenib metabolite M6; 4-[4-[[4-chloro-3-(trifluoromethyl)phenyl]carbamoylamino]-3-fluorophenoxy]pyridine-2-carboxylic acid; 2-Pyridinecarboxylic acid, 4-(4-((((4-chloro-3-(trifluoromethyl)phenyl)amino)carbonyl)amino)-3-fluorophenoxy)-; 4-(4-((4-Chloro-3-(trifluoromethyl)phenyl)carbamoylamino)-3-fluoro-phenoxy)pyridine-2-carboxylic acid; Regorafenib Impurity 4 
