Synonyms:Crude oil;Oil deposits;Seneca oil;Mashinesol;Nax Silicone-off;DC-Tron;Petroleum oil;Rock oil;Crude oil flow improver;Virol;Ikar;Petroleum oils;Crude petroleum;Agropon;
99% *data from raw suppliers
HYDRANAL-SOLVER CRUDE OIL 95.00% *data from reagent suppliers
The research investigates the chemical constituents of the plant Pilea cavaleriei subsp. crenata, aiming to identify and characterize new humulane-type sesquiterpenoids. The study successfully isolated nine new and two known sesquiterpenoids from the plant extracts. The structures of these compounds were elucidated using various spectroscopic techniques, including 1D- and 2D-NMR, HRMS, and X-ray crystallography, combined with chemical conversions. Key chemicals used in the research include ethanol for extraction, petroleum ether and methanol for partitioning, silica gel and Sephadex LH-20 for column chromatography, and LiAlH4 and NaBH4 for chemical transformations. The study discovered an ene reaction during chemical conversions, which could explain the prevalence of allylic hydroperoxide groups in natural products. The findings suggest that the Urticaceae family is a rich source of natural sesquiterpenoids, warranting further investigation.
The study investigates the Wurtz reaction, focusing on the formation and behavior of organosodium compounds. It explores the carbonation of isopropylsodium and the microscopic examination of coatings formed on sodium when reacting with various alkyl chlorides. The research also improves conditions for isolating the first phase of the Wurtz reaction, demonstrating that primary halides form a loose coating on sodium, while secondary halides create a more impenetrable one. The study concludes that the first phase likely involves the formation of an organosodium intermediate, and it discusses the difficulties in separating the first and second phases of the reaction. The chemicals involved include sodium, alkyl chlorides (such as n-propyl, n-butyl, n-amyl, and s-butyl chlorides), and various solvents like n-octane and petroleum ether. The roles of these chemicals are to form organosodium compounds and to study their interactions and stability under different conditions.
The research focuses on the chemical synthesis and analysis of various purine derivatives, specifically 6-(alkylthio)-9-(hydroxymethyl)-SH-purines. The study investigates the hydroxymethylation of purine-6(1H)-thione and its derivatives, revealing that substitution occurs at the 9 position of the purine ring. Key chemicals involved include ethyl acetate, ligroin, benzene, ethyl alcohol, and petroleum ether, used as solvents in the synthesis and analysis processes. The researchers also utilized aqueous formaldehyde and sodium carbonate for hydroxymethylation reactions. Additionally, the study examines the infrared and ultraviolet spectra of these compounds, as well as their stability and reactivity with isocyanates. One of the synthesized compounds was screened for antitumor activity, showing promising results in certain leukemia models. The research provides valuable insights into the structure and potential applications of these purine derivatives.
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