92519-15-8 Biolf 143 Biolf-143 Methanimidamide, N'-(6,9-dihydro-9-((2-hydroxy-1-(hydroxymethyl)ethoxy)methyl)-6-oxo-1H-purin-2-yl)-N,N-dimethyl- N-(Dimethylamino)methylene-9-((2-hydroxy-1-(hydroxymethyl)ethoxy)methyl)guanine