1. 埃罗替尼杂质42(4-氯-6-(2-氯乙氧基)-7-(2-甲氧基乙氧基)-喹唑啉)

埃罗替尼杂质42(4-氯-6-(2-氯乙氧基)-7-(2-甲氧基乙氧基)-喹唑啉)

Erlotinib Impurity 42 (4-Chloro-6-(2-Chloroethoxy)-7-(2-Methoxyethoxy)-Quinazoline)