can't read?
Cytochalasin A is a metabolite of the fungus Drechslera dematoidea which binds to the barbed end of actin filaments resulting in inhibition of both the association and dissociation of subunits. Used as a tool for cytological research
C 3040 (OTTO) Cytochalasin A, from drechslera dematioidea, 99% Cas 14110-64-6 - used in actin polymerization studies.