Wiktionary
valnoctamide
n. A sedative-hypnotic drug related to valpromide.
Wikipedia
Valnoctamide
Valnoctamide ( INN, USAN) has been used in France as a sedative- hypnotic since 1964. It is a structural isomer of valpromide, a valproic acid prodrug; unlike valpromide, however, valnoctamide is not transformed into its homologous acid, valnoctic acid, in vivo.