2 22 Light yellow solid soluble in DMSO Store at -20°C and protect from light, especially in solution Kd: 145 nM (22°C in pH 7.2 buffer) &lamba; Ex/&lamba; Em (no Ca2) = 363/512 nm; &lamba; Ex/&lamba; Em (high Ca2) = 335/505 nm ε (363 nm, no Ca2) = 27,000 M-1cm-1; ε (335 nm, high Ca2) = 35,000 M-1cm-1 C44H47N3O24 MW: 1001.9 [108964-32-5] Light yellow solid soluble in DMSO Store at -20°C and protect from light, especially in solution Kd: 145 nM (22°C in pH 7.2 buffer) d &lamba; Ex/&lamba; Em (no Ca2) = 363/512 nm; &lamba; Ex/&lamba; Em (high Ca2) = 335/505 nm ExEm2ExEm 2 ε (363 nm, no Ca2) = 27,000 M-1cm-1; ε (335 nm, high Ca2) = 35,000 M-1cm-1 2-1-12-1-1 C44H47N3O24 4447324 MW: 1001.9 [108964-32-5]