Selective cell-permeable protein kinase C inhibitor. Displays slight selectivity for conventional PKC isoforms over Ca2+ and atypical PKC isoforms; binding affinities for rat isoforms are 9, 28, 31, 37 and 108 nM for PKC's α, βΙ, βΙΙ, γ and ε respectively. Orally available and prevents T cell chronic inflammation in vivo. Purity 99%. MW (observed): 489.01