Description: WHI-P258 is a dimethoxyquinazoline inhibitor of JAK3. This compound binds JAK3 weakly and may be used as a JAK-binding negative control in the development of new therapeutics. Target: JNK, JAK, EGFR. Smiles: COC1=CC2=NC=NC(NC3=CC=CC=C3)=C2C=C1OC. References: Fry DW, et al. Science. 1994, 265(5175),...

WHI-P258 is a quinazoline compound that modeling studies suggested would bind to the active site of JAK3 with an estimated Ki value of 72 µM. However, it is inactive at JAK3 (IC50 = >300 µM) and has been used as a negative control for structurally similar compounds that inhibit platelet aggregation and herpes...