1 D2Q Ethyl 5-{2-[(2,4-diamino-5-methylpyrido[2,3-D]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}pentanoate 1.000 2 MXA 6-(2,5-dimethoxy-benzyl)-5-methyl-pyrido[2,3-D]pyrimidine-2,4-diamine 0.750