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Acrolein (systematic name: propenal) is the simplest unsaturated aldehyde.It is a colorless liquid with a foul and acrid aroma. The smell of burnt fat (as when cooking oil is heated to its smoke point) is caused by glycerol in the burning fat breaking down into acrolein.
Propionaldehyde exhibits the reactions characteristic of alkyl aldehydes, e.g. hydrogenation, aldol condensations, oxidations, etc. It is the simplest aldehyde with a prochiral methylene such that α-functionalized derivatives (CH 3 CH(X)CHO) are chiral. If water is available, propionaldehyde exists in equilibrium with 1,1-propanediol, a ...
It was submitted to the United States Department of Health and Human Services in April 1994. [2] [3] [4] They are also listed in the documents that are part of the 1998 Tobacco Master Settlement Agreement. [5] It applies, as documented, only to American manufactured cigarettes intended for distribution within the United States by the listed ...
Propanal (propionaldehyde) differs in spelling from propanol by a single letter and is a different compound. Propranolol is a drug used for reducing blood pressure and hand tremors. Index of chemical compounds with the same name
Propylene glycol is metabolized in the human body into pyruvic acid (a normal part of the glucose-metabolism process, readily converted to energy), acetic acid (handled by ethanol-metabolism), lactic acid (a normal acid generally abundant during digestion), [41] and propionaldehyde (a potentially hazardous substance).
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Formaldehyde does not accumulate in the environment, because it is broken down within a few hours by sunlight or by bacteria present in soil or water. Humans metabolize formaldehyde quickly, converting it to formic acid. [27] [28] It nonetheless presents significant health concerns, as a contaminant.
Phenylpropanolamine (PPA), sold under many brand names, is a sympathomimetic agent used as a decongestant and appetite suppressant. [9] [1] [10] [11] It was once common in prescription and over-the-counter cough and cold preparations.