12-O-Butyroyl-phorboldodecanoate 37415-56-8 5H-Cyclopropa(3,4)benz(1,2-e)azulen-5-one, 1,1a-alpha,1b-beta,4,4a,7a-alpha,7b,8,9,9a-decahydro-4a-alpha,7b-alpha,9-beta,9a-alpha-tetrahydroxy-3-hydroxymethyl-1,1,6,8-alpha-tetramethyl-, 9-butyrate 9a-dodecanoate Phorbol, 12-O-butyroyl-13-dodecanoate