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2-Oxazolidinone is a heterocyclic organic compound containing both nitrogen and oxygen in a 5-membered ring. ... -3-phenylurea upon treatment with aniline ...
Oxazolidine is a five-membered heterocycle ringwith the formula (CH 2) 3 (NH)O.The O atom and NH groups are not mutually bonded, in contrast to isoxazolidine. [ 2 ] [ 3 ] Oxazolidines (emphasis on plural) are derivatives of the parent oxazolidine owing to the presence of substituents on carbon and/or nitrogen.
β-Lactam antibiotics are indicated for the prevention and treatment of bacterial infections caused by susceptible organisms. At first, β-lactam antibiotics were mainly active only against gram-positive bacteria, yet the recent development of broad-spectrum β-lactam antibiotics active against various gram-negative organisms has increased their usefulness.
The oxazolidones and isoxazolidones are a set of six isomeric five-membered heterocyclic compounds consisting of a carbonyl group, an oxygen atom, a nitrogen atom with a hydrogen atom attached, and two methylene groups.
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This ring was found on a woman who was buried approximately 1,200 years ago in Birka, an ancient Viking city located 30 km (19 miles) west of contemporary Stockholm, Sweden.
2‑oxazoline, 3‑oxazoline, and 4‑oxazoline (from left to right) Three structural isomers of oxazoline are possible depending on the location of the double bond, however only 2‑oxazolines are common. 4‑Oxazolines are formed as intermediates during the production of certain azomethine ylides [2] but are otherwise rare. 3‑Oxazolines are even less common but have been synthesised ...
Compared to other OECD countries, U.S. healthcare costs are one-third higher or more relative to the size of the economy (GDP). [2] According to the CDC , during 2015, health expenditures per-person were nearly $10,000 on average, with total expenditures of $3.2 trillion or 17.8% of GDP . [ 3 ]