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 is one of the new characters who made his debut in Hotel Transylvania 2. He is the father of Dracula, the paternal grandfather of Mavis, the grandfather-in-law of Jonathan and the maternal great-grandfather of Dennis. He is 1,248 years old.