homogentisic acid

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Related to homogentisic acid: ochronosis, alkaptonuria, alkapton, Homogentisic acid oxidase
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Noun1.homogentisic acid - an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
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The diagnosis of alkaptonuria was confirmed by the presence of markedly elevated homogentisic acid levels (1568 [micro]g/mg of creatinine, 780 times the normal level).
26) In that case, needle biopsy material displayed dark brown homogentisic acid deposition in both the corpora amylacea and prostatic epithelium, but again not in the stroma.
Fifteen standard phenolic compounds, including gallic acid, pyrogallol, homogentisic acid, protocatechuic acid, (+) catechin, chlorogenic acid, caffeic acid, vanillin, ferulic acid, naringin, resveratrol, naringenin, hesperetin, formononetin, biochanin-A were purchased from Sigma Aldrich and used for calibration curves.