1 5UB 8-(1,3-thiazol-4-yl)-3~{H}-pyrido[3,4-D]pyrimidin-4-one 1.000 2 5V7 8-(2-azanyl-1,3-thiazol-4-yl)-3~{H}-pyrido[3,4-D]pyrimidin-4-one 0.941