part of phosphoric diester hydrolase activity 7,8-dihydro-D-neopterin 2',3'-cyclic phosphate phosphodiesterase activity https://github.com/geneontology/go-ontology/issues/31862 molecular_function GO:0044688 jl EC:3.1.4.56 MetaCyc:RXN-12357 RHEA:35799 2012-08-15T14:28:30Z MetaCyc:RXN-12356 Catalysis of the reaction: 7,8-dihydro-D-neopterin 2',3'-cyclic phosphate + H2O = 7,8-dihydroneopterin 3'-phosphate or 7,8-dihydroneopterin 2'-phosphate + H+. RHEA:35803 methanopterin-containing compound biosynthetic process