abstract |
(2-butynyl) -3-pyrrolidinyl] -7- (4-phenoxyphenyl) -7,9-dihydro-8H- Purine-8-one hydrochloride has a Btk selective inhibitory activity and is superior in metabolic stability, and is excellent in solubility and absorbability against free bases and crystallizable, so that B cells and mast cells are involved And the like. |