Researchers at Shandong Second Medical University have developed a dimethyl quaternary ammonium derivative of harmane that shows strong potential for attacking the bacterium through diverse mechanisms ...

Yichang Humanwell Pharmaceutical Co. Ltd. has described quaternary ammonium salts reported to be useful for the treatment of anesthesia and pain.

Polyurethane (PU) is a macromolecular polymeric material that exhibits properties between those of common rubber and rigid plastic, and has excellent properties such as wide rigidity, high intensity, ...