CAS 37558-16-0 appears in our catalog under these names: Phorbol 12,13-dibutyrate/ 99.32% (existing batch purity), Phorbol 12,13–dibutyrate, Phorbol 12,13-dibutyrate, Phorbol-12,13-dibutyrate 1PC x 1MG, Phorbol-12,13-dibutyrate 1PC x 5MG. Offered by: TargetMol, GLPBio, Biosynth, Sigma-Aldrich, Chemat. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 100mg, 10mM (in 1ml dmso), 1 mg.