Pyridine is used as a precursor to agrochemicals and pharmaceuticals and is also an important solvent and reagent. Pyridine is added to ethanol to make it unsuitable for drinking (see denatured alcohol).yridine is a basic heterocyclic organic compound with the chemical formula C5 H5 N. It is structurally related to benzene, with one methine group (=CH-) replaced by a nitrogen atom.
It depends on at least two factors. The first is how much you are given the Novocaine and the second is the location of the treatment. An injection of Novocaine normally lasts for one to two hours for the tooth. However, it might number your tongue, face, and lips up to five hours, or three hours at least. Most people do not like the sensation of numbness because it is very uncomfortable.
Novocaine is the brand name of a drug called procaine which is a local anaesthetic. It is still used commonly in dentistry but there are better alternatives which are used in the medical field such as lignocaine as it is more effective/. Source(s): Nurse. laurawhitby Â· 8 years ago.