Medchemexpress, HY-103319 5mg Calmidazolium chloride CAS:57265-65-3 Calmidazolium chloride (R 24571) is a calmodulin (CaMK) antagonist, antagonizing CaM-dependent phosphodiesterase and calmodulin-induced activation of erythrocyte Ca2+-transporting ATPase with IC 50 s of 0.15 and 0.35 μM, respectively [1] . Also in anti-cancer research [2] . Calmidazolium binds to CaMK with a K d of 3 nM. Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.