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Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer compound made from the monomer N-vinylpyrrolidone. [1] PVP is available in a range of molecular weights and related viscosities, and can be selected according to the desired application properties.
Acute use (1–3 days) yields a potency about 1.5× stronger than that of morphine and chronic use (7 days+) yields a potency about 2.5 to 5× that of morphine. Similarly, the effect of tramadol increases after consecutive dosing due to the accumulation of its active metabolite and an increase of the oral bioavailability in chronic use.
N-Vinylpyrrolidone (NVP) is an organic compound consisting of a 5-membered lactam ring linked to a (2 carbon) vinyl group. It is a colorless liquid although commercial samples can appear yellowish. It is produced industrially by vinylation of 2-pyrrolidone, i.e. the base-catalyzed reaction with acetylene. [2]
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2-Pyrrolidone itself is used in inkjet cartridges. [5] A variety of pharmaceutical drugs are 2-pyrrolidone derivatives, including cotinine, doxapram, povidone, and ethosuximide, and the racetams. The chemical is an intermediate in the production of the polyvinylpyrrolidone precursor vinylpyrrolidone. [3]
The Irish Sun, Sept. 2, 2024, LIKE DOMINOES Watch moment 15 abandoned high rises are DEMOLISHED in just seconds after Chinese builders ‘ran out of money’ @Meiyou46597917, Nov. 13, 2020 ...
Angela Bassett is getting candid about losing the Best Supporting Actress Academy Award in 2023, for her work in Black Panther: Wakanda Forever. In her cover story for Town & Country's March issue ...
2 How costs are covered No information found No information found No information found ! Change the tax code to allow individuals to fully deduct healthcare costs from their taxes, as employers can12! Restrict illegal immigration, since people who have entered the U.S. illegally often donÕt have health insurance and may primarily use hospital