12-Deoxy-phorbol-13-alpha-methylbutyrate 12-Deoxyphorbol-13-(2-methylbutyrate) 28152-97-8 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-3-(hydroxymethyl)-1,1,6,8-alpha-tetramethyl-4a-beta,7b-alpha,9a-alpha-trihydroxy-, 9a-(2-methylbutyrate)