RT Journal Article SR Electronic T1 THE OCCURRENCE OF nor-EPINEPHRINE IN THE CHINESE TOAD VENOM JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 286 OP 290 VO 102 IS 4 A1 H. M. Lee A1 K. K. Chen YR 1951 UL http://jpet.aspetjournals.org/content/102/4/286.abstract AB By paper chromatography, and response of the cat's blood pressure and nictitating membrane, l-nor-epinephrine has been found in a sample of l-epinephrine isolated from Ch`an Su, a commercial form of Chinese toad poison. It occurs in the quantity of approximately 2 to 4 per cent estimated as l-nor-epinephrine bitartrate.