2-carboxy-4,5-dimethoxybenzenediazonium,chloride

吉非替尼中间体B

3-benzyl-6,7-dimethoxyquinazolin-4-one

6,7-dimethoxy-2-(trifluoromethyl)-3,1-benzoxazin-4-one

2-mercapto-4,5-dimethoxy-benzoic acid