8-chloro-10-methyl-3-carboxymethylpyrimido<4,5-b>quinoline-2,4(3H,10H)-dione 在
乙二胺四乙酸 作用下,
生成
(8-Chloro-10-methyl-2,4-dioxo-4,6,7,10-tetrahydro-2H-pyrimido[4,5-b]quinolin-3-yl)-acetic acid 、 (3'-Carboxymethyl-8,8'-dichloro-10,10'-dimethyl-2,4,2',4'-tetraoxo-1,4,5,10,1',2',3',4',5',10'-decahydro-2H-[5,5']bi[pyrimido[4,5-b]quinolinyl]-3-yl)-acetic acid