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Bial's reagent consists of 0.4 g orcinol, 200 ml of concentrated hydrochloric acid and 0.5 ml of a 10% solution of ferric chloride. [2] Bial's test is used to distinguish pentoses from hexoses; this distinction is based on the color that develops in the presence of orcinol and iron (III) chloride. Furfural from pentoses gives a blue or green color.
It is used in the production of the dye orcein and as a reagent in some chemical tests for pentoses, such as Bial's Test. It may be synthesized from toluene; more interesting is its production when acetone dicarboxylic ester is condensed with the aid of sodium. It crystallizes in colorless prisms with one molecule of water, which redden on ...
8-Anilinonaphthalene-1-sulfonic acid (ANS), also called 1-anilino-8-naphthalenesulfonate, is an organic compound containing both a sulfonic acid and an amine group. This compound is used as a fluorescent molecular probe. [1]
In 1901, the German chemist Carl Harries determined furan's structure through work with succindialdehyde and 2-methylfuran, thereby also confirming furfural's proposed structure. [ 16 ] [ 17 ] Furfural remained relatively obscure until 1922, [ 6 ] when the Quaker Oats Company began mass-producing it from oat hulls. [ 18 ]
It has the formula [(CH 3) 4 C 2 O 2 B] 2; the pinacol groups are sometimes abbreviated as "pin", so the structure is sometimes represented as B 2 pin 2. It is a colourless solid that is soluble in organic solvents. It is a commercially available reagent for making pinacol boronic esters for organic synthesis.
Flavonoids as anticancer agents: structure-activity relationship study. Current Medicinal Chemistry-Anti-Cancer Agents. Neuroprotective effects of natural compounds on neurotoxin-induced oxidative ...
As a reagent, SMEAH is comparable with lithium aluminium hydride (LAH, LiAlH 4). It is a safer alternative to LAH and related hydrides. SMEAH exhibits similar reducing effects, but does not have the inconvenient pyrophoric nature, short shelf-life, or limited solubility of LAH. Upon contact with air and moisture, SMEAH reacts exothermically but ...
Elon Musk is rapidly consolidating control over large swaths of the federal government with President Donald Trump ’s blessing, sidelining career officials, gaining access to sensitive databases ...