Description: Maurocalcine TFA acts as an agonist for ryanodine receptor (RyR) channels 1, 2, and 3, demonstrating cell-penetrating capabilities. It induces binding of [3H]ryanodine to RyR1 with an EC50 of 2558 nM and exhibits an apparent affinity of 14 nM for RyR2. This compound is applicable for in vivo cell tracking or other cellular imaging techniques.