Phenylglyoxylic acid
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| Template:Longitem | C8H6O3 |
| Molar mass | 150.13 g/mol |
| Appearance | colorless solid |
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Phenylglyoxylic acid is the organic compound with the formula C6H5C(O)CO2H. The conjugate base, known as benzoylformate is the substrate of benzoylformate decarboxylase, a thiamine diphosphate-dependent enzyme:
- benzoylformate + H+ ⇌ benzaldehyde + CO2
It is a colourless solid with a melting point of 64–66 °C and is moderately acidic (pKa = 2.15).
Phenylglyoxylic acid can be synthesized by oxidation of mandelic acid with potassium permanganate.[1] An alternative synthesis involves hydrolysis of benzoyl cyanide.[2]
References
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