Regorafenib 5MG. Regorafenib, CAS: 755037-03-7, MF: C21H15ClF4N4O3, Molecular Weight: 482. 81, Purity: greater than or equal to 98%, Appearance: Off-white solid, Synonym: 4-(4-(3-(4-chloro-3-(trifluoromethyl)phenyl)ureido)-3-fluorophenoxy)-N-methylpicolinamide BAY 73-4506, Size: 5MG