A new series of potent analgesics: dextro 2:2-diphenyl-3-methyl-4-morpholinobutyrylpyrrolidine and related basic amides. II. Comparative analgesic activity, acute toxicity and tolerance development in rats for R875, morphine, pethidine and methadone.
D000577:Amides; D000700:Analgesics; D018712:Analgesics, Non-Narcotic; D000818:Animals; D058633:Antipyretics; D001713:Biphenyl Compounds; D004361:Drug Tolerance; D008614:Meperidine; D008691:Methadone; D009020:Morphine; D051381:Rats
D000577:Amides; D000700:Analgesics; D018712:Analgesics, Non-Narcotic; D058633:Antipyretics; D001713:Biphenyl Compounds; D008614:Meperidine; D008691:Methadone; D009020:Morphine; C010574:biphenyl
ANALGESICS AND ANTIPYRETICS