US Patent 6,638,966
United States Patent and Trademark Office
University of Iowa Research Foundation (Iowa City, IA, US)
Melatonin (N-acetyl-5-methoxytryptamine), or its biologically active analogues, are used to induce anesthesia.
Baker, Max T. and Attala, Mohamed Naguib Use of melatonin analogues for induction of general anesthesia. US Patent 6,638,966 filed February 19, 2002 and issued October 28, 2003. https://ir.uiowa.edu/patents/344