强效的ATP竞争性TGF-βRI抑制剂;Potent ATP-competitive TGF-βRI inhibitor;SD-208是口服活性的ATP竞争性TGF-βRI抑制剂,IC50为49 nM,比对TGF-βRII和其它激酶的抑制性高100倍和17倍。;SD-208 is a selective TGF-βRI (ALK5) inhibitor with IC50 of 48 nM, >100-fold selectivity over TGF-βRII.A TGF-β signaling blocker