1,3,2-Dioxaphosphorinane, 2-(7-theophyllinyl)ethyl ester, 2-oxide 69387-75-3 BRN 1178149 Phosphoric acid, 2-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxopurin-7-yl) ethyl cyclic 2,2-dimethyltrimethylene ester