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.
The castle depicted in the novel Dracula matches some parts of Bran Castle-but it's far from being an exact match. The character of Dracula was, however, based on a real individual-Vlad the Impaler. Vlad's cruelty and bloodlust was truly inhuman-stranger than fiction.