The molecule is a cyclic purine nucleotide that is synthesised from NAD+ by ADP-ribosyl cyclase; acts as an agonist at ryanodine receptors. It has a role as a ryanodine receptor agonist and a metabolite. It is a cyclic purine nucleotide and a nucleotide-sugar. It derives from an ADP-D-ribose. It is a conjugate acid of a cyclic ADP-ribose(2-).
(2R,3R,4S,5R,13R,14S,15R,16R)-8,10-dihydroxy-24-imino-8,10-dioxo-7,9,11,25,26-pentaoxa-1,17,19,22-tetraza-8lambda5,10lambda5-diphosphapentacyclo[18.3.1.12,5.113,16.017,21]hexacosa-18,20,22-triene-3,4,14,15-tetrol