Patents Assigned to HAMELN PHARMA GMBH
  • Intermediates for the preparation of remifentanil hydrochloride
    Patent number: 10844014
    Abstract: A new intermediate for synthesizing 1-substituted-4-[phenyl(propanoyl)amino]piperidine-4-carbonitrile derivatives is laid open. Specifically set out is a method for use of this intermediate in the preparation of remifentanil. The enclosed shorter process offers a greater yield of products with higher purity as compared to methods reported in the prior art.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 24, 2020
    Assignee: HAMELN PHARMA GMBH
    Inventors: Pavol Valachovic, Janka Králová, L'ubo{hacek over (s)} Slí{hacek over (z)}ik, Norbert Varga