Hoechst Roussel Pharmaceuticals

Hoechst Marion Roussel

Franz J Weiberth

Thomas B Lee

George S Wong

This application relates to a retractable batch reactor sampler that is temporarily attached to a reactor, for use in sampling small volumes of a reaction mixture within a reactor on single or multiple occasions, and then detached from the reactor, all without affecting an inert gas blanket already existing within the reactor.

Retractable batch reactor sampler

This invention relates to a process for the preparation of a product of the formula ##STR1## wherein R, R.sup.1, R.sup.2, X and m are defined within which process comprises

Method of preparation of physostigmine carbamate derivatives from

This application relates to a new process for the preparation of a product of the formula ##STR1## wherein R is loweralkyl;

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Belle Mead, NJ, United States of America

Franz J Weiberth