a substance that is introduced into the body to aid in the visualization and measurement of biological processes
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BenzaMide, N-[4-[(4-ethyl-1-piperazinyl)Methyl]-3-(trifluoroMethyl)phenyl]-4-Methyl-3-[[[5-(2-thienyl)-3-pyridinyl]carbonyl]aMino]-
3-bromo-phloretin
Pyridine, 2-chloro-5-(fluoromethyl)- (9CI)
(S)-1-(benzyloxycarbonyl)-2-azetidinemethanol-p-tosylate
