BTK Inhibitor, PCI-32765. A potent Brutons Tyrosine Kinase (BTK) inhibitor, Synonyms:-2-propen-1-one, 1-((3R)-3-(4-amino-3-(4-phenoxyphenyl)-1h-pyrazolo(3,4-d)pyrimidin-1-yl)-1-piperidinyl), CAS Number:-936563-96-1, Molecular Formula:-C2GH2GN6O2, Purity:-G98% by HPLC, 25mg.