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2,4-Dithiapentane is the dimethyldithioacetal of formaldehyde. Its synthesis was first reported in 1941. Its synthesis was first reported in 1941. [ 1 ] [ 2 ] It is industrially prepared by the acid-catalyzed condensation of methyl mercaptan , the main aromatic compound in both halitosis and foot odor and a secondary compound in flatulence ...
At higher concentrations the odor can be unpleasant and may cause symptoms of central nervous system depression such as nausea, dizziness and headache. A common method for preparing isobutyl acetate is Fischer esterification, where precursors isobutyl alcohol and acetic acid are heated in the presence of a strong acid.
n-Butyl acetate is an organic compound with the formula CH 3 CO 2 (CH 2) 3 CH 3. A colorless, flammable liquid, it is the ester derived from n- butanol and acetic acid . It is found in many types of fruit, where it imparts characteristic flavors and has a sweet smell of banana or apple.
A common form of amyl nitrite is the isomer with the formula (CH 3) 2 CHCH 2 CH 2 ONO, which may be more specifically referred to as isoamyl nitrite. The similarly named amyl nitrate has very different properties. At the same time, isopropyl nitrite has a similar structure and similar uses (also called 'poppers') but with worse side-effects. [13]
The apple is a deciduous tree, generally standing 2 to 4.5 metres (6 to 15 feet) tall in cultivation and up to 15 m (49 ft) in the wild, though more typically 2 to 10 m (6.5 to 33 ft). [ 5 ] [ 1 ] When cultivated, the size, shape and branch density are determined by rootstock selection and trimming method. [ 5 ]
Another study found that the perception threshold of 3-mercapto-3-methylbutan-1-ol is 1500 ng/L. [15] This study found that MMB had a "catty" odor, had an orthonasal odor threshold of 2 μg/L in water, and was found in concentrations from 150-1500 μg/kg in coffee. The synthesis of MMB in wine is brought on by the fermentation process.
Methyl butyrate, also known under the systematic name methyl butanoate, is the methyl ester of butyric acid.Like most esters, it has a fruity odor, in this case resembling apples or pineapples. [2]
Racemic 2-methylbutanoic acid is a slightly volatile, colorless liquid with a pungent cheesy odor. [12] The smell differs significantly between the two enantiomeric forms. ( S )-2-Methylbutyric acid has a pleasantly sweet, fruity odor [ 13 ] while ( R )-2-methylbutanoic acid has a pervasive, cheesy, sweaty odor. [ 14 ]