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Phenylhydrazine was the first hydrazine derivative characterized, reported by Hermann Emil Fischer in 1875. [7] [8] He prepared it by reduction of a phenyl diazonium salt using sulfite salts. Fischer used phenylhydrazine to characterize sugars via formation of hydrazones known as osazones with the sugar aldehyde. He also demonstrated in this ...
Hydrazines (R 2 N−NR 2) are a class of chemical compounds with two nitrogen atoms linked via a covalent bond and which carry from one up to four alkyl or aryl substituents. . Hydrazines can be considered as derivatives of the inorganic hydrazine (H 2 N−NH 2), in which one or more hydrogen atoms have been replaced by hydrocarbon grou
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CAS Number. 122-66-7 ... Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references
'The inflationary spiral' Tariffs have been one of the most talked-about promises of Trump's campaign. The president-elect has pledged to impose blanket tariffs of at least 10% on all trading ...
A strict low-fat diet is the current first-line treatment for the condition. The disorder affects fewer than 5,000 people in the U.S., according to government data. "We don't see any hurdles on ...
The recalled chips include Lay's Classic Potato Chips, in flexible 13 oz. (368.5 grams) bags with UPC code 28400 31041, a "Guaranteed Fresh" date of 11 Feb 2025, and one of either two ...
The compound is an important reagent in organic synthesis, serving as a source of reactive diimide and its subsequent chemical reactions. It condenses with ketones and aldehydes to form hydrazones, which can be further transformed into reactive intermediates such as diazo compounds or carbenes.