76281-91-9 Mad-cylc amp Methyl 5'-(6-aminopurin-9-yl)-5'-deoxy-beta-D-ribofuranoside 2',3'-cyclic monophosphate beta-D-Ribofuranoside, methyl 5-(6-amino-9H-purin-9-yl)-5-deoxy-, cyclic 2,3-(hydrogen phosphate), compd. with N,N-diethylethanamine (1:1)