SP600125是泛JNK抑制剂，对JNK1，JNK2和JNK3的IC50分别为40 nM，40 nM和90 nM，比对MKK4和MKK3，MKK6，PKB，PKCα的抑制性高10倍和超过25倍。A potent, selective and reversible inhibitor of JNK1, JNK-2, and JNK-3 SP600125 is a broad-spectrum JNK inhibitor for JNK1, JNK2 and JNK3 with IC50 of 40 nM, 40 nM and 90 nM in cell-free assays, respectively; 10-fold greater selectivity against MKK4, 25-fold greater selectivity against MKK3, MKK6, PKB, and PKCα, and 100-fold selectivity against ERK2, p38, Chk1, EGFR etc. A potent, selective and reversible inhibitor of JNK1, JNK-2, and JNK-3