A new series of potent analgesics: dextro 2:2-diphenyl-3-methyl-4-morpholino-butyrylpyrrolidine and related amides. I. Chemical structure and pharmacological activity

  • J Pharm Pharmacol. 1957 Jun;9(6):381-400.
P A JANSSEN ,  A H JAGENEAU
PMID: 13439527
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