Neuromuscular blocking agents

  • US 5,453,510 A
  • Filed: 07/10/1992
  • Issued: 09/26/1995
  • Est. Priority Date: 07/13/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A physiologically acceptable 1R-cis,1'"'"'R-cis-2,2'"'"'-(3,11-dioxo-4,10-dioxatridecamethylene)-bis-(1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-veratrylisoquinolinium salt being substantially free of other geometric or optical isomers thereof, the amount of said other geometric or optical isomers thereof being less than 8% w/w based on the combined weight of said physiologically acceptable salt and any of said geometric or optical isomers.

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