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propionic
propionic, a. Chem. (prəʊpɪˈɒnɪk) [ad. F. propionique (Dumas, Malagute, & Leblanc 1847; Comptes Rendus XXV. 781), f. Gr. πρό, pro-2 (or πρῶτος first) + πίων, πιον- fat, in reference to its being the first in order of the actual fatty acids (formic and acetic acids, which precede it in the series, no...
Oxford English Dictionary
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Propionic acid
In biogas plants, propionic acid is a common intermediate product, which is formed by fermentation with propionic acid bacteria. A propionic, or propanoic, compound is a carboxylate salt or ester of propionic acid.
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Propionic anhydride
Synthesis
Industrial route to propionic anhydride involves thermal dehydration of propionic acid, driving off the water by distillation:
2 CH3CH2CO2H + CO → (CH3CH2CO)2O
Propionic anhydride has also been prepared by dehydration of propionic acid using ketene:
2 CH3CH2CO2H + CH2=C=O → (CH3CH2CO
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metacetic
metacetic, a. Chem. (mɛtəˈsiːtɪk) [f. meta- 2 + acetic.] = propionic.1854 R. D. Thomson Cycl. Chem., Metacetic Acid. Metacetonic acid. A synonyme of Propionic acid.
Oxford English Dictionary
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Propionic acidemia
Propionic acidemia, also known as propionic aciduria or propionyl-CoA carboxylase deficiency (PCC deficiency), is a rare autosomal recessive metabolic Symptoms and signs
Propionic acidemia can vary in severity. Severe propionic acidemia lead to symptoms already seen in newborns.
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Sodium propionate
Sodium propanoate or sodium propionate is the sodium salt of propionic acid which has the chemical formula Na(C2H5COO). Reactions
It is produced by the reaction of propionic acid and sodium carbonate or sodium hydroxide.
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Ethyl propionate
It is the ethyl ester of propionic acid. It is a colorless volatile liquid with a pineapple-like odor. Ethyl propionate can be synthesized by the Fischer esterification of ethanol and propionic acid:
CH3CH2OH + CH3CH2CO2H → CH3CH2O2CCH2CH3 + H2O
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Vinyl propionate
This colorless liquid is the ester of propionic acid and vinyl alcohol. Since vinyl alcohol is not available, vinyl propionate is produced by the addition of propionic acid to acetylene.
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Imidazol-4-one-5-propionic acid
Imidazol-4-one-5-propionic acid is an intermediate in the metabolism of histidine. It is a colorless compound that is sensitive to light in air. Microbial production of imidazol-4-one-5-propionic acid in the human gut has been shown to affect insulin signaling, which is relevant to type II diabetes
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Simultaneous determination of formic acid, acetic acid,propionic acid ...
SHANDONG SCIENCE ›› 2017, Vol. 30 ›› Issue (4): 92-98. doi: 10.3976/j.issn.1002-4026.2017.04.015 • Environment and Ecology • Previous Articles Next Articles Simultaneous determination of formic acid, acetic acid,propionic acid and n-butyric acid in environmental samples by ion chromatography
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Ammonium propionate
Ammonium propionate or ammonium propanoate is the ammonium salt of propionic acid. It has the chemical formula NH4(C2H5COO). Reaction
It is formed by the reaction of propionic acid and ammonia.
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Propionyl chloride
It is the acyl chloride derivative of propionic acid. It undergoes the characteristic reactions of acyl chlorides. Synthesis
Propionyl chloride is industrially produced by chlorination of propionic acid with phosgene:
CH3CH2CO2H + COCl2 → CH3CH2COCl + HCl + CO2
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Stizolobic acid
Biosynthesis
Stizolobium hassjoo catalyzes the conversion of L-dihydroxyphenylalanine into stizolobinic acid, alpha-amino-6-carboxy-2-oxo-2H-pyran-3-propionic acid, and stizolobic acid, alpha-amino-6-carboxy-2-oxo-2H-pyran-4-propionic acid, in the presence of NADP+ or NAD+ under aerobic conditions.
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Uroporphyrinogen III
a hexahydroporphine core, where each pyrrole ring has the hydrogen atoms on its two outermost carbons replaced by an acetic acid group (, "A") and a propionic The conversion entails a reversal of the last pyrrole unit (thus swapping the acetic and propionic acid groups) and a condensation reaction that closes
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