Pyrotinib (maleate)

An EGFR and HER2 inhibitor (IC50s = 13 and 38 nM, respectively), selectively inhibits the proliferation of HER2+ BT474 and SKOV3 cells (IC50s = 5.1 and 43 nM, respectively) over HER2- MDA-MB-231 cells (IC50 = 3,500 nM), decreases tumor growth without affecting body weight in BT474 and SKOV3 mouse xenograft models at 10 mg/kg per day. Formulation: A solid. InChI: InChI=1S/C32H31ClN6O3.2C4H4O4/c1-3-41-30-17-27-25(16-28(30)38-31(40)12-10-24-8-6-14-39(24)2)32(21(18-34)19-36-27)37-22-9-11-29(26(33)15-22)42-20-23-7-4-5-13-35-23,2*5-3(6)1-2-4(7)8/h4-5,7,9-13,15-17,19,24H,3,6,8,14,20H2,1-2H3,(H,36,37)(H,38,40),2*1-2H,(H,5,6)(H,7,8)/b12-10+,2*2-1-/t24-,,/m1../s1. InChIKey: KLHFGQSCVQPTIN-XUZAKNADSA-N. SMILES: CCOC(C(NC(/C=C/[C@H]1CCCN1C)=O)=C2)=CC3=C2C(NC4=CC=C(C(Cl)=C4)OCC5=CC=CC=N5)=C(C#N)C=N3.OC(/C=C\C(O)=O)=O.OC(/C=C\C(O)=O)=O