the microspectrophotometric analysis of cellular indolamines shows excitation emission maxima at 385 -- 525 nm ( serotonine ) and catecholamine at 410 -- 475 nm upon hcl treatment catecholamine products show a shift of the excitation peak from 410 to 370 nm ( dopamine ) .
C0007412
catecholamine
C0013030
dopamine