BTC tetrapotassium

Description: Tetrapotassium BTC is a calcium indicator with low affinity (Kd approximately 7-26 µM) that offers favorable characteristics for cellular calcium imaging, such as extended excitation wavelengths (400/485 nm), minimal sensitivity to Mg2+, and precise ratiometric measurement [1]. Smiles: O=C(CN(CC([O-])=O)C1=CC=C(C)C=C1OCCOC(C=C2C=C3C4=NC5=C(S4)C=CC=C5)=C(N(CC([O-])=O)CC([O-])=O)C=C2OC3=O)[O-].[K+].[K+].[K+].[K+]