Provided are compounds of Formula I; and pharmaceutically acceptable salts and solvates thereof. ##STR00001## The present disclosure relates to novel compounds and to their use as agonists of the kappa opioid receptor. The disclosure also relates to methods for preparation of the compounds and to pharmaceutical compositions containing such compounds. Kappa opioid agonists that exhibit full agonist properties at the kappa opioid receptor have been widely shown to be efficacious in preclinical models of pain, particularly visceral pain.

A mixture can be used for modifying the rheology of polymeric substrates. The mixture contains a hydroxylamine ester and an isocyanate functionalized with a thio compound.

A mixture can be used for modifying the rheology of polymeric substrates. The mixture contains a hydroxylamine ester and an isocyanate functionalized with a thio compound.

The present invention provides a method for fixing carbon dioxide gas as a carbonyl compound represented by formula (3) as depicted by FIG. 1 and comprising, purging of carbon dioxide in a solution of a nucleophile represented by the formula (1) in presence of a solvent at a temperature ranging from 40 Degree Celsius to 35 Degree Celsius, followed by adding a reagent at temperature ranging from 40 degree to 35 degree and thereafter adding another nucleophile represented by the formula (2) to obtain carbonyl compound represented by formula (3). The present invention can be advantageously used to obtain commercially important carbonyl compounds and clean unwanted carbon dioxide gas from the atmosphere and industrial effluents.

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