(1S,6R,8R,9R)-8-(6-aminopurin-9-yl)-3-oxido-3-oxo-2,4,7-trioxa-3$l^{5}-phosphabicyclo[4.3.0]nonan-9-ol (1S,6R,8R,9R)-8-(6-amino-9-purinyl)-3-oxido-3-oxo-2,4,7-trioxa-3$l^{5}-phosphabicyclo[4.3.0]nonan-9-ol (1S,6R,8R,9R)-8-(6-aminopurin-9-yl)-3-keto-3-oxido-2,4,7-trioxa-3$l^{5}-phosphabicyclo[4.3.0]nonan-9-ol nchembio.2007.33-comp40 ZINC03873977 ZINC03873978