Calcium Orange AM

Calcium Orange AM, an intracellular calcium reporter, exhibits specific fluorescence (Ex/Em = 549/576 nm) upon binding with free calcium. It does not enter vacuoles or compartmentalize into acidic vesicles [1].

C([O-])(=O)C1=C(C=2C3=C([O+]=C4C2C=CC(N(C)C)=C4)C=C(N(C)C)C=C3)C=CC(NC(NC5=CC(OCCOC6=C(N(CC(OCOC(C)=O)=O)CC(OCOC(C)=O)=O)C=CC=C6)=C(N(CC(OCOC(C)=O)=O)CC(OCOC(C)=O)=O)C=C5)=S)=C1