Coelenterazine ip is a synthetic derivative of coelenterazine. The luminescence intensity of its aequorin complex is almost 50 times higher than that of the aequorin formed from native coelenterazine while its response time to calcium is much slower than the latter.Yellow solid soluble in MeOH or EtOHStore at -20°C and protect from lightC23H23N3O3MW: 389.45