the use of sodium borate impregnated silica gel plates for the chromatographic separation of the catecholamines noradrenaline , adrenaline , and isoprenaline from their respective 3-0-methylated derivatives , normetanephrine , metanephrine , and methoxy-isoprenaline , is described .
C0007412
catecholamines
C0028351
noradrenaline