2190506-55-7

7-?(1-?Boc-?4-?piperidyl)?-?2-?(4-?phenoxyphenyl)?pyrazolo[1,?5-?a]?pyrimidine-?3-?carbonitrile is used as a reagent in the synthesis of Zanubrutinib (BGB-3111), a novel, potent, and selective covalent inhibitor of Bruton''s tyrosine kinase.