6-Aminoquinoline carbamyl (AQC)-tag was used as a screening probe to label the amine.
A combination of UPLC and MALDI-TOF/MS was advantageous to identifying tagged amines.
Applying naphthylethyl column to estimate purified AQC-tagged amines.
Ethanolamine was characterized as a hypotensor-responsive amine in pregnancy-associated hypertensive mice.