B159899错误; 6-氯嘧啶-4-羧酸乙酯; 6-氯-4-嘧啶甲酸乙酯; 6-氯嘧啶-4-甲酸乙酯;

ethyl 6-chloropyrimidine-4-carboxylate; 6-Chloro-4-pyriMidinecarboxylic acid ethyl ester; Ethyl 6-chloropyriMidine-...; 4-PyriMidinecarboxylic acid, 6-chloro-, ethyl ester; 6-Chloro-pyriMidine-4-carboxylic acid ethyl ester; Ethyl 4-chloro-6-pyrimidinecarboxylate; 6-chloro-4-Pyrimidine carbocylic acid ethyl ester;