It’s only fair to share… Tirabrutinib チラブルチニブ塩酸塩 GS-4059 ONO-4059 6-amino-9-[(3R)-1-but-2-ynoylpyrrolidin-3-yl]-7-(4-phenoxyphenyl)purin-8-one Formula C25H22N6O3. HCl CAS 1439901-97-9 HCL 1351636-18-4FREE FORM Mol weight 490.9415 JAPAN APPROVED 2020/3/25 Velexbru Antineoplastic, Bruton’s tyrosine kinase inhibitor 8H-Purin-8-one,6-amino-7,9-dihydro-9-((3R)-1-(1-oxo-2-butyn-1-yl)-3-pyrrolidinyl)-7-(4-phenoxyphenyl) 6-Amino-9-((3R)-1-(2-butynoyl)-3-pyrrolidinyl)-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one Tirabrutinib (Velexbru®) is an orally administered, small molecule, Bruton’s tyrosine kinase (BTK) inhibitor being developed by Ono Pharmaceutical and its licensee Gilead Sciences for …