Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 16251-45-9, Name is (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one, SMILES is O=C1O[C@H](C2=CC=CC=C2)[C@H](C)N1, belongs to oxazolidines compound. In a document, author is Lopez-Ruiz, Rosalia, introduce the new discover, Safety of (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one.
Dissipation studies of famoxadone in vegetables under greenhouse conditions using liquid chromatography coupled to high-resolution mass spectrometry: putative elucidation of a new metabolite
BACKGROUND Famoxadone is a pesticide that is used to control fungal diseases and its dissipation in vegetables should be monitored. For that purpose, liquid chromatography coupled to mass spectrometry has been used. RESULTS The dissipation of famoxadone has been monitored in cucumber, cherry tomato and courgette under greenhouse conditions at different doses (single and double), using ultra high-performance liquid chromatography coupled to Orbitrap mass spectrometry (Thermo Fisher Scientific, Bremen, Germany). The concentration of famoxadone increased slightly just after the application of the commercial product and then decreased. The half-lives (DT50) of famoxadone are different for each matrix, ranging from 2 days (courgette single dose) to 10 days (cucumber double dose). The main metabolites, 4-phenoxybenzoic acid and 1-acetyl-2-phenylhydrazine, were not detected in vegetable samples. Other metabolites described by the European Food and Safety Authority, such as IN-JS940 [(2RS)-2-hydroxy-2-(4-phenoxyphenyl)propanoic acid], IN-KF015 [(5RS)-5-methyl-5-(4-phenoxyphenyl)-1,3-oxazolidine-2,4-dione] and IN-MN467 [(5RS)-5-methyl-3-[(2-nitrophenyl)amino]-5-(4-phenoxyphenyl)-1,3-oxazolidine-2,4-dione], were detected in the three matrices. Untargeted analysis allowed for the putative elucidation of a new metabolite of famoxadone in cucumber (up to 290 mu g kg(-1)) and cherry tomato (up to 900 mu g kg(-1)) samples. CONCLUSION The dissipation of famoxadone has been investigated in three vegetables: tomato, cucumber and courgette. The persistence of famoxadone was low in the three matrices (DT50 less than 10 days). Metabolites of famoxadone were monitored, detecting IN-JS940, IN-MN467 and IN-KF015, and the putative elucidation of a new metabolite of famoxadone was performed by applying software tools. (c) 2019 Society of Chemical Industry
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 16251-45-9 is helpful to your research. Safety of (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one.
Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem