The chemical KRN-633 has a designated molecular formula of C20H21ClN4O4 and a molecular weight of 416.862 g/mol. Synonyms may include: UNII-E1V875I8DX, Urea, N-(2-chloro-4-((6,7-dimethoxy-4-quinazolinyl)oxy)phenyl)-N'-propyl-, N-(2-Chloro-4-((6,7-dimethoxy-4-quinazolinyl)oxy)phenyl)-N'-propylurea, Vegf receptor tyrosine kinase inhibitor III, KRN633, K00589A (ChemID).