radioactively labeled chemical 4[N-methyl-14C] iodoantipyrine 2021-07-29T17:59:13Z 4-Iodoantipyrene-N-methyl-14C 4-iodo-5-methyl-1-(114C)methyl-2-phenylpyrazol-3-one C11H11IN2O PMID:29498562 This is 4-Iodoantipyrine, labeled with C-14 on the N-methyl group. Iodoantipyrine readily crosses the blood-brain barrier, and has been used to measure total and regional cerebral blood flow in vivo. XCO:0000881 experimental_condition_ontology pubchem.compound:101126542 slaulede