Luciferin【Cypridina】

2-(sec-Butyl)-6-(1H-indole-3-yl)-8-(3-guanidinopropyl)imidazo[1,2-a]pyrazine-3(7H)-one

2-(1-Methylpropyl)-6-(1H-indole-3-yl)-8-(3-guanidinopropyl)imidazo[1,2-a]pyrazine-3(7H)-one

1-[3-[[3,7-Dihydro-6-(1H-indol-3-yl)-2-(1-methylpropyl)-3-oxoimidazo[1,2-a]pyrazin]-8-yl]propyl]guanidine