mobile phase compositions for three different purposes are reported : 1 ) separation of 9 endogenous catechols , possibly occurring in the samples , and 3 i.s . in a moderately short retention time ( tr ) ( l-dopa , dopeg , alpha-methyldopa ( alpha-medopa , i.s . ) , noradrenaline ( na ) , dopac , adrenaline ( a ) , dihydroxybensylamine ( dhba , i.s . ) , norsalsolinol ( ns ) , dopamine ( da ) , epinine ( epi ) , salsolinol ( s ) and isoprenaline ( iso , i.s . ) within 11 min ) , 2 ) ultra rapid separation of detectable endogenous catechols except l-dopa ( na , dopac , a , dhba ( i.s . ) , ns and da within 5.2 min and with s within 5.7 min ) and 3 ) moderately fast separation of detectable endogenous catechols ( l-dopa , na , a , dhba ( i.s . ) , ns , dopac and da within 7.6 min and with s within 10 min ) .
C0014563
adrenaline
C0028351
na