B 2603 (OTTO) Bis(triphenylphosphine)palladium(II) dichloride, puriss Cas 13965-03-2 - used as a catalyst of choice in hydrogenation, hydrosilation, carbonylation, oxidation, elimination, reduction, allyl aceate isomerization, dimerization of 1,3-dienes, and C-C bond formation such as Negishi coupling, Suzuki coupling, Kumada coupling.