Membrane-impermeant calcium indictor that can be loaded into cells via microinjection or scrape loading.Kd: 1 uM λEx/λ Em (low or high [Ca2+])= 556nm/576nm ε (556 nm) = 80,000 M-1cm-1. Orange red solid soluble in DMSO and water (pH >6) Store at 4°C and protect from light, especially in solution C40H39K3N4O11 MW: 993
