Tipifarnib, Free base. A potent farnesyl protein transferase (FPT) inhibitor, Synonyms:-(R)-6-(Amino(4-chlorophenyl)(1-methyl-1H-imidazol-5-yl)methyl)-4-(3-chlorophenyl)-1-methylquinolin-2(1H)-one; R-115777, CAS Number:-192185-72-1, Molecular Formula:-C2GH22Cl2NGO, 5mg.