[EN] KETAMINE FORMULATION FOR SUBCUTANEOUS INJECTION<br/>[FR] FORMULATION DE KÉTAMINE POUR INJECTION SOUS-CUTANÉE
申请人:BEXSON BIOMEDICAL INC
公开号:WO2020232274A1
公开(公告)日:2020-11-19
Provided herein are subcutaneous formulations of ketamine that are useful for treating a variety of disease and disorders. The subcutaneous ketamine formulations provided herein reduce injection site irritation and pain.
The first detailed description of the Lewis acid-catalyzed racemization of (R)-ketamine is reported. A process for racemization of the undesired (R)-ketamine enantiomer produced from the resolution for preparing the NMDA receptor antagonist (S)-ketamine was developed in quantitative yield with 99% chemical purity in the presence of a Lewis acid at 150 °C. Varying degrees of racemization were observed