上下游产品
2-cyano-3-methylpyridine N-tert-butyl-3-methylpyridine-2-carboxamide 3-[2-(3-chlorophenyl)ethyl]-2-pyridine-carbonitrile -N-(1,1-dimethylethyl)-2-pyridinecarboxamide3-2-(3-chlorophenyl)ethyl-N-(1,1-dimethylethyl)-2-pyridinecarboxamide loratadine