英文别名Amlodipine Impurity 31; 5-ethyl 7-methyl 6-(2-chlorophenyl)-; 5-ethyl 7-methyl 6-(2-chlorophenyl)-8-methyl-3,4,6,7-tetrahydro-2H- benzo[b][1,4]oxazine-5,7-dicarboxylate; 5-Ethyl 7-methyl 6-(2-chlorophenyl)-3,4,6,7-tetrahydro-8-methyl-2H-1,4-benzoxazine-5,7-dicarboxylate; 2H-1,4-Benzoxazine-5,7-dicarboxylic acid, 6-(2-chlorophenyl)-3,4,6,7-tetrahydro-8-methyl-, 5-ethyl 7-methyl ester; 5-Ethyl 7-Methyl 6-(2-Chlorophenyl)-8-methyl-3,4,6,7-tetrahydro-2H-1,4-benzo[b][1,4]oxazine-5,7-dicarboxylate; 5-Ethyl 7-methyl 6-(2-chlorophenyl)-8-methyl-3,4,6,7-tetrahydro-2H-benzo[b][1,4]oxazine-5,7-dicarboxylate (Amlodipine Impurity) 
