Carbamic acid, [1-[7-(2-butynyl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1-(2-oxo-2-pheny lethyl)-1H-purin-8-yl]-3-piperidinyl]-, 1,1-dimethylethyl ester
CAS No. 668276-53-7