Coelenterazine hcp is a synthetic derivative of coelenterazine. The luminescence intensity of its aequorin complex is 190 times higher than that of the aequorin complex formed from native coelenterazine while the response time to calcium is faster. Yellow solid soluble in MeOH or EtOHStore at -20°C and protect from lightC25H25N3O2MW: 399.49