<unk>  (INN; commonly known as bromvalerylurea) is a hypnotic and sedative discovered by Knoll in 1907 and patented in 1909.
It is marketed  over the counter in Asia under various trade names (such as Brovarin), usually in combination with non-steroidal anti-inflammatory drugs.
Chronic use of<unk>  has been associated with bromine poisoning.
Bromisoval
Ethionine
Sardine
Acetylleucine
Clobutinol
Allyl
Metyrosine
Tuaminoheptane