Twelve polyoxygenated cyclohex(a/e)ne diterpene esters, named albiflorenes A–L (1–12), were isolated from the whole plants of Kaempferia albiflora, known as “Prao Mang Mum.” Their structures and relative stereochemistry were determined by extensive spectroscopic analysis. Furthermore, the comp...
(names, formulas, properties and reactions) Topic 28 • Esters - Loop Game (names, formulas) Topic 29 • Synthetic Polymers - Loop Game (addition polymers, names, uses) • Synthetic Polymers - Tarsia (addition polymers, names, uses) designed for Edexcel IGCSE (9-1) Chemistry course, ...
Development of harvester ant colonies alters soil chemistry Nests of the harvester ant Pogonomyrmex barbatus typically contain higher concentrations of organic matter, nitrogen and phosphorus than surrounding soils... D Wagner,JB Jones,DM Gordon - 《Soil Biology & Biochemistry》 被引量: 112发表: 200...
I am kind of stuck in a section of my organic chemistry book while I get an aswer to this question. It shows how ketones (and aldehydes) react with alcohols to form ketals. However, they stress that such reaction won't happen with esters because "esters are less reactive than ketones/...
Under appropriate conditions it appears most likely that the leuco compound which may be produced by hydrolysis of the original ester will disproportionate to yield the vat dye and a compound at a lower oxidation level than the leuco compound....
J Yu,M Ahmedna,I Goktepe - 《Food Chemistry》 被引量: 452发表: 2007年 Evaluation of nitrogen and organic matter balance in the feedlot as affected by level and source of dietary fiber. A trial was conducted to determine the effect of level and source of dietary fiber on N and OM excre...
A new, fast, and environmentally friendly method based on ultrasound assisted extraction combined with dispersive liquid–liquid microextraction (US-DLLME)... A Alves,G Vanermen,A Covaci,... - 《Analytical & Bioanalytical Chemistry》 被引量: 6发表: 2016年 Plasticizers and bisphenol A, in packag...
The Importance of Nitrous Acid (hono) For Tropospheric Daytime Chemistry In Urban Areas Nitrous acid (HONO) has been first detected as a typical product of the polluted urban atmosphere about 20 years ago. At this time OH radicals were believed to be formed dominantly by ozone photolysis followe...
M Hillman,AJ Weiss - 《Journal of Organometallic Chemistry》 被引量: 21发表: 1972年 Determination of uranium and thorium at the sub-ng/g-level in high-purity aluminium by radiochemical neutron activation analysis A radiochemical neutron activation analysis technique for the determination of uranium...
Chemistry and Biochemistry of Green Tobacco The synthetic examples fall into two broad categories, the boronic acid-dependent and boronicacid-independent lectin mimics Although the carbohydrate-binding ability of most of the lectinmimics studied thus far does not reach the level ... Dawson,F R. -...