Paracetamol Synthesis and Uses

The starting phenol is nitrated first with dilute sulfuric acid and sodium nitrate. This is an electrophilic aromatic substitution reaction in which the hydrogen on the aromatic ring is replaced by a nitro group. Since the hydroxyl group on the aromatic ring is an electron donating group, it acts as an ortho-para position. By nitration, two products are formed: o-nitrophenol and p-nitrophenol. Comparing the stability of the two products obtained, o-nitrophenol is less stable due to steric hindrance and hydroxyl and nitro groups in close proximity to one another.

Acetaminophen - synthesis and use Acetaminophen discovered in 1877 by John Hopkins University's Harmon Northrop Morse is one of several aniline derivatives known to have analgesic and antipyretic action (Brodie 23). It was first synthesized by reduction of p-nitrophenol and tin in glacial acetic acid; however it was not used as a drug until 10 years later (Bertolini 264). Initially, closely related compound phenacetin showed similar physiological functions ... 2 university English total About 80% of Americans have access to the Internet at home, school or work and about 50% Americans have a smartphone online anytime. Sherry Turkle's article "How computers change our ideas", Michael Agger's "Lazy Eyes", and John C. Dvorak's "American and their smartphones" can change how the technology changes the world I am talking about. Easy access and ongoing use of the Internet are changing the way people learn and think

The analgesic and antipyretic actions of acetaminophen were first discovered at the end of the 19th century. Both drugs have been used to treat mild to moderate pain, acetanilide and phenacetin. In 1889 it was confirmed that acetaminophen was excreted in the urine of patients taking these drugs. In 1948, Brodie and Axelrod determined that acetaminophen is the major metabolite of phenacetin and acetanilide. This led to the belief that the clinical effect of these two drugs is entirely due to the rapid conversion of acetaminophen. Thereafter, it was demonstrated that phenacetin itself has some activity, but since it is mostly converted to acetaminophen, it is only at very high doses. However, so far, due to some indirect evidence of its role in causing analgesic nephropathy, non - berberine is considered to be more toxic than acetaminophen. With the popularity of paracetamol, phenacetin disappeared from the market. ,