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 II Dracul, father of Vlad III, was admitted to the order around 1431, after which Vlad II wore the emblem of the order and later, as ruler of Wallachia, his coinage bore the dragon symbol, from which the name Dracula is derived.People of Wallachia only knew voievod (king) Vlad III as Vlad ÈepeÈ (the Impaler).The name Dracula became popular in Romania after publication of Stoker's book. Contrary to popular belief, the name Dracula does not translate to son of the devil in Romanian, which would be  pui de drac .lad II Dracul, father of Vlad III, was admitted to the order around 1431, after which Vlad II wore the emblem of the order and later, as ruler of Wallachia, his coinage bore the dragon symbol, from which the name Dracula is derived. People of Wallachia only knew voievod (king) Vlad III as Vlad ÈepeÈ (the Impaler).