The chemical Orantinib has a known molecular formula of C18-H18-N2-O3. Synonyms may include: SU-6668, TSU 68, NSC 702827, 5-((1,2-Dihydro-2-oxo-3H-indol-3-ylidene)methyl)-2,4-dimethyl-1H-pyrrole-3-propanoic acid, 3-(2,4-Dimethyl-5-(2-oxo-1,2-dihydroindol-3-ylidenemethyl)-1H-pyrrol-3-yl)propionic acid, 3-(2,4-Dimethyl-5-((2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl)-1H-pyrrol-3-yl)propionic acid, 3-(4-(2-Carboxyethyl)-3,5-dimethylpyrrol-2-methylidenyl)-2-indolinone, SU6668 (ChemID).