RT Journal Article SR Electronic T1 LOCAL ANESTHETIC ACTION OF A SERIES OF ARYL-URETHANES JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 190 OP 193 VO 91 IS 2 A1 HELEN RAMSEY A1 H. B. HAAG YR 1947 UL http://jpet.aspetjournals.org/content/91/2/190.abstract AB The local anesthetic action of a series of aryl-urethane compounds has been tested. All compounds appeared to possess anesthetic activity greater than that of cocaine hydrochloride, this difference being most marked in the case of the compounds with the longer substituted alkyl groups. A correlation was shown to exist between the duration of effect and the length of the substituted alkyl group in each of the two series.