英文别名Avanafil Impurity 18; Avanafil impurity; Avanafil-008; 5-Pyrimidinecarboxylic acid, 2,2'-oxybis[4-[[(3-chloro-4-methoxyphenyl)methyl]amino]-, 5,5'-diethyl ester; AvafilImpurity18; ethyl 4-{[(3-chloro-4-methoxyphenyl)methyl]amino}-2-[(4-{[(3-chloro-4-methoxyphenyl)methyl]amino}-5-(ethoxycarbonyl)pyrimidin-2-yl)oxy]pyrimidine-5-carboxylate; Avanafil Impurity 83; 2,2'-oxybis(4-((3-chloro-4-methoxybenzyl)amino)pyrimidine-5- diethyl carboxylate); ethyl 4-[(3-chloro-4-methoxyphenyl)methylamino]-2-[4-[(3-chloro-4-methoxyphenyl)methylamino]-5-ethoxycarbonylpyrimidin-2-yl]oxypyrimidine-5-carboxylate; Diethyl2,2'-oxybis(4-((3-chloro-4-methoxybenzyl)amino)pyrimidine-5-carboxylate) 
