Piperazine derivative and analgesic composition containing the s

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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544392, 544395, A01N 4348

Patent

active

045187126

ABSTRACT:
An analgesic composition containing as active ingredient a piperazine derivative represented by the general formula (1) ##STR1## wherein R.sub.1 represents a cyclopropylmethyl group, an isopropyl group or an allyl group and R.sub.2 represents a phenyl group having as substituent a halogen atom or a trifluoromethyl group.

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