1(4H)-Pyridineacetic acid, 3,5-diiodo-4-oxo- (8CI)(9CI) 1,4-Dihydro-3,5-diiodo-4-oxo-1-pyridylacetic acid 101-29-1 EINECS 202-932-5 NSC 60718 Pelvirinic acid Umbradilic acid