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Another method of visualizing the Keller-Kiliani reaction is to treat the test solution with ferric chloride-containing glacial acetic acid, followed by the addition of concentrated sulfuric acid, which sinks to the bottom (like in the brown ring test for nitrates). A brown ring in the interface indicates the presence of cardenolides.
Keller's reagent can refer to two different reagents: Keller's reagent (metallurgy), used to etch aluminum alloys; Keller's reagent (organic), used to detect alkaloids
The Kiliani–Fischer synthesis, named for German chemists Heinrich Kiliani and Emil Fischer, is a method for synthesizing monosaccharides.It proceeds via synthesis and hydrolysis of a cyanohydrin, followed by reduction of the intermediate acid to the aldehyde, thus elongating the carbon chain of an aldose by one carbon atom while preserving stereochemistry on all the previously present chiral ...
Republicans who control the U.S. House of Representatives are trying to overcome internal differences on how to pay for President Donald Trump's sweeping tax cuts, with hardline conservatives ...
A substance containing a glycosidic bond is a glycoside. The term 'glycoside' is now extended to also cover compounds with bonds formed between hemiacetal (or hemiketal) groups of sugars and several chemical groups other than hydroxyls, such as -SR (thioglycosides), -SeR (selenoglycosides), -NR 1 R 2 (N-glycosides), or even -CR 1 R 2 R 3 (C ...
Years before this breakthrough, a YouTube video was released calling for information, and in October 2021, the case was featured in 24 Shades of Blue, a Toronto Police Service podcast highlighting ...
Meghan Markle is missing her valentine, Prince Harry.. The Duchess of Sussex, 43, shared a never-before-seen photo with her husband, 40, to celebrate Valentine's Day on her newly launched ...
Glycoside hydrolases EC 3.2.1. are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycoside hydrolases, based on sequence similarity, has led to the definition of over 100 different families.