Pyridinium Tribromide is used as a brominating agent for organic synthesis especially for pharmaceuticals and hormones. It can be replaced for n-Bromosuccinimide. (N-Bromo derivatives and ammonium tribromides are mainly used as brominating agents)
Top definition. Vlad. Vlad is usually a Russian name, sometimes romanian, and usually is an athletic all around great guy that is good at everything. He is known to have a big penis and is a legend in bed. He has an amazing body and really funny. He is very popular especially with females...fine females.
This article is about Vlad Dracula, a medieval ruler of Wallachia. For the legendary vampire, see Count Dracula. Vlad III, known as Vlad the Impaler (Romanian: Vlad ÈepeÈ; pronunciation: [Ëvlad ËtÍ¡sepeÊ]) or Vlad Dracula (1428/1431 â 1476/77), was voivode (or prince) of Wallachia three times between 1448 and his death. He was the second son of Vlad Dracul, who became the ruler of Wallachia in 1436.