The molecule is flavin-adenine dinucleotide (FAD) in which the hydrogen at position 6 of the benzo[g]pteridinedione moiety is substituted by a hydroxy group. It has a role as a cofactor. It is a conjugate acid of a 6-hydroxy-FAD(3-).
[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4S)-5-(7,8-dimethyl-2,4,6-trioxo-1H-benzo[g]pteridin-10-yl)-2,3,4-trihydroxypentyl] hydrogen phosphate