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.
Vlad III the Impaler was fighting against the Turks. The legend says that the Turkish army surrounded Vlad's castle, the Poienari Castle, led by his brother Radu the Handsome. Vlad's wife threw herself off the tower into the ArgeÅ River below the castle.