2-(4-Hydroxybenzyl)-6-(4-hydroxyphenyl)-8-benzyl-3,7-dihydroimidazo(1,2-a)pyrazin-3-one 55779-48-1 Imidazo(1,2-a)pyrazin-3(7H)-one, 6-(4-hydroxyphenyl)-2-((4-hydroxyphenyl)methyl)-8-(phenylmethyl)- coelenterazine