TG101209是JAK2选择性抑制剂，IC50为6 nM，对Flt3和RET的IC50为25 nM和17 nM，比对JAK3的抑制性高30倍，对JAK2V617F和MPLW515L/K突变型敏感，还能抑制BRD4，IC50为130 nM。An inhibitor of JAK2, Flt-3, Ret, and JAK3 TG101209 is a selective JAK2 inhibitor with IC50 of 6 nM, less potent to Flt3 and RET with IC50 of 25 nM and 17 nM, ~30-fold selective for JAK2 than JAK3, sensitive to JAK2V617F and MPLW515L/K mutations; TG101209 inhibit BRD4 activity with IC50 of 130 nM. An inhibitor of JAK2, Flt-3, Ret, and JAK3