CAS No. 55779-48-1

Batch: Purity:99.92
Coelenterazine Chemical Structure
Chemical Structure
Check the Coelenterazine product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 8-benzyl-6-(4-hydroxyphenyl)-2-[(4-hydroxyphenyl)methyl]imidazo[1,2-a]pyrazin-3-ol
CAS Number 55779-48-1
Molecular Formula

C26H21N3O3

Molecular Weight (MW) 423.46
SMILES C1=CC=C(C=C1)CC2=NC(=CN3C2=NC(=C3O)CC4=CC=C(C=C4)O)C5=CC=C(C=C5)O
InChIKey LNCOEGVEEQDKGX-UHFFFAOYSA-N

Ordering Information

Biological Activity

Coelenterazine is a luminescent substrate for apoaequorin and Renilla luciferase that enables bioluminescent signal generation in biochemical assays. It acts as a bioluminescence donor in bioluminescence resonance energy transfer (BRET) systems to detect protein-protein interactions in living cells. Additionally, coelenterazine functions as a sensitive chemiluminescent probe for the detection of reactive oxygen and nitrogen species, including superoxide anions and peroxynitrite. [1][2]

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 84 mg/mL (198.36 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 1 mg/mL
Water Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.