Phenylglyoxylic Acid
611-73-4O=C(O)C(=O)c1ccccc1FAQJJMHZNSSFSM-UHFFFAOYSA-NPhenylglyoxylic acid is a 2-oxo monocarboxylic acid that is glyoxylic acid in which the aldehyde hydrogen is substituted by a phenyl group. It has a role as a biomarker and a human xenobiotic metabolite. It is functionally related to a glyoxylic acid. It is a conjugate acid of a phenylglyoxylate.
611-73-4DTXSID80209993CHEMBL950CHEBI:18280Light yellow crystalline solid; [Sigma-Aldrich MSDS]
Solid
安全情報は参考情報です。供給元の安全データシート(SDS)、適用法令、専門家による評価に代わるものではありません。
Warning
H315 (98%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 51 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
解説C8H6O3(150.13).C6H5COCOOH.ベンゾイルギ酸は,フェニルグリオキシル酸ともいう.アセトフェノンを酸化するか,ベンゼンにシュウ酸モノエステルクロリドをフリーデル-クラフツ縮合させたのち,加水分解するなどの方法でつくられる.結晶.融点66 ℃,沸点147~151 ℃(1.6 kPa).水に易溶.濃硫酸により安息香酸とCOに分解する.森北出版「化学辞典(第2版)
用途有機合成原料。
用途フェニルグリオキシル酸は、過マンガン酸カリウムによるマンデル酸の酸化によって合成できる。ベンゾイルシアニドの加水分解でも得られる。
用途共役塩基は、ベンゾイルギ酸として知られ、チアミン二リン酸依存性酵素であるベンゾイルギ酸デカルボキシラーゼの基質となる。
使用Phenylglyoxylic Acid (cas# 611-73-4) is a compound useful in organic synthesis.
純化方法If the sample is oily, then it may contain H2O. In this case dry it in a vacuum desiccator over P2O5 or KOH until crisp. For further purification dissolve 5.5g in hot CCl4 (750mL), add charcoal (2g, this is necessary otherwise the acid may separate as an oil), filter, cool in ice-water until crystallisation is complete. Filter the acid off, and the solvent on the crystals is removed by keeping the acid (4.5g) in a vacuum desiccator for 2 days. Slightly yellow crystals are obtained. It can be recrystallised also from *C6H6/pet ether, and can be distilled in a vacuum. The acid is estimated by titration with standard NaOH. The phenylhydrazone is recrystallised from EtOH, m 163-164o, and the semicarbazone acid has m 259o(dec) (from EtOH). The methyl ester distils at 137o/14mm, 110-111o/2mm, n 20 1.5850. [Baert & Kates J Am Chem Soc 67 1482 1945, Schaffer & Corey J Org Chem 24 1825 1959, Beilstein 10 H 654, 10 IV 2737.]
読み込み中…
化学的特性white to light yellow adhering crystals,
定義ChEBI: A 2-oxo monocarboxylic acid that is glyoxylic acid in which the aldehyde hydrogen is substituted by a phenyl group.