CA Index Name: Coelenterazine hcpImidazo[1,2-α]pyrazin-3(7H)-one, 8-(cyclopentylmethyl)-6-(4-hydroxyphenyl)-2-(phenylmethyl)-
Other Names: CLZN-hcp; Coelenterazine hcp
Merck Index Number: Not listed
Chemical / Dye Class: Heterocycle; Imidazo[1,2-α]pyrazin-3(7H)-one
Molecular Formula: C25H25N3O2
Molecular Weight: 399.48
Physical Form: Yellow powder
Solubility: Soluble in ethanol, methanol
Melting Point: > 200 °C
Boiling Point: 568.2 ± 60.0 °C, pressure: 760 Torr
pKa: 10.48 ± 0.30, most acidic, temperature: 25 °C; 6.17 ± 0.60, most basic, temperature: 25 °C
Absorption (λmax): 433 nm
Emission (λmax): 445 nm
Synthesis: Synthetic method
Staining Applications: Calcium ions
Biological Applications: Calcium indicator; assaying luminescent enzyme; measuring luciferase activity; as a substrate for luciferase; screening HIV-1 protease inhibitors; bioluminescence resonance energy transfer (BRET) detection system
Industrial Applications: Not reported
Safety / Toxicity: No data available