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Vanilmandelic acid

Frdns has demonstrated this possibility with reserpine and rescinnamine hy irradiating at the start zone for two hours and obtaining a characteristic zone pattern (fingerprint) after TLC separation of the photochemically produced derivatives [20J. Huck and Dworcak exposed developed chromatograms with vanilmandelic acid and homovanillic acid zones to diffuse daylight and observed the formation of fluorescent metabolites that were suitable for direct quantitative analysis [21]. [Pg.18]

Hydroayindoleacetic acid Creatinine Vanilmandelic acid Serotonin... [Pg.27]

F5. Fleisher, M., Dollinger, M. R., and Schwartz, M. K., Effect of 6-hydroxyindolyl-acetic acid in the colorimetric determination of urinary vanilmandelic acid. Amer. J. Clin. Pathol. 51, 655-658 (1969). [Pg.37]

Shirao, M. Suzuki, S. Kobayashi, J. Nakazawa, H. Mochizuki, E. Analysis of creatinine, vanilmandelic acid, homovanillic acid and uric acid by micellar electrokinetic chromatography. J. Chromatogr., B 1997, 693, 463-467. [Pg.1688]

Binder SR, Sivorinovsky G. Measurement of urinary vanilmandelic acid and homovaniUic acid by high-performance liquid chromatography with electrochemical detection following extraction by ion-exchange and ion-moderated partition. J Chromatogr 1984 336 173-88. [Pg.1065]

Figure 7.1 Pathways of synthesis and metabolism of catecholamines with enzymes catalyzing various reactions. (1) Tyrosine hydroxylase (2) aromatic amino acid decarboxylase (3) phenylamine-P-hydroxylase (4) phenylethanolamine-A-methyltransferase (5) monoamine oxidase plus aldehyde dehydrogenase (6) catechol-O-methyltransferase (7) conjugating enzymes about 95% phenolsulfo-transferase and 5% phenolglucuronatetransferase (in human). DOPA, dihydroxyphenylalanine DOMA, dihydroxymandelic acid DHPG, dihydroxyphenylglycol DOPAC, dihydroxyphenylacetic acid HVA, homovanillic acid MHPG, methoxyhydroxylphenylglycol VMA, vanilmandelic acid... Figure 7.1 Pathways of synthesis and metabolism of catecholamines with enzymes catalyzing various reactions. (1) Tyrosine hydroxylase (2) aromatic amino acid decarboxylase (3) phenylamine-P-hydroxylase (4) phenylethanolamine-A-methyltransferase (5) monoamine oxidase plus aldehyde dehydrogenase (6) catechol-O-methyltransferase (7) conjugating enzymes about 95% phenolsulfo-transferase and 5% phenolglucuronatetransferase (in human). DOPA, dihydroxyphenylalanine DOMA, dihydroxymandelic acid DHPG, dihydroxyphenylglycol DOPAC, dihydroxyphenylacetic acid HVA, homovanillic acid MHPG, methoxyhydroxylphenylglycol VMA, vanilmandelic acid...
Fig. 4.4.12. Separation of a mixture of acidic and basic catecholamines on a LiChrosorb RP-8 column (0.28x25 cm). Eluent Water containing 0.02 M citrate (pH 2.5)/l% propanol/NaCIQ4 (0.08 M)/0.3% sodium dodecyl sulphate. Peaks DHMA, 3,4-dihydroxymandelic acid VMA, vanilmandelic acid HGA, 2,5-dihydroxyphenylacetic acid DOPAC, 3,4-dihydroxyphenylacetic acid 5-HIAA, 5-hydroxyindole-3-acetic acid HVA, homovanillylmandelic acid E, epinephrine NE, norepinephrine N-Syn, norsyneph-rine Syn, synephrine Dopa, 3,4-dihydroxyphenylalanine NM, normetanephrine MN, metanephrine Isopren, isoprenaline 3-H-Tyrm, dopamine Tyrm, tyramine 3-M-Tyrm, 3-methoxytyramine. Reprinted from Ref. 21 with permission. Fig. 4.4.12. Separation of a mixture of acidic and basic catecholamines on a LiChrosorb RP-8 column (0.28x25 cm). Eluent Water containing 0.02 M citrate (pH 2.5)/l% propanol/NaCIQ4 (0.08 M)/0.3% sodium dodecyl sulphate. Peaks DHMA, 3,4-dihydroxymandelic acid VMA, vanilmandelic acid HGA, 2,5-dihydroxyphenylacetic acid DOPAC, 3,4-dihydroxyphenylacetic acid 5-HIAA, 5-hydroxyindole-3-acetic acid HVA, homovanillylmandelic acid E, epinephrine NE, norepinephrine N-Syn, norsyneph-rine Syn, synephrine Dopa, 3,4-dihydroxyphenylalanine NM, normetanephrine MN, metanephrine Isopren, isoprenaline 3-H-Tyrm, dopamine Tyrm, tyramine 3-M-Tyrm, 3-methoxytyramine. Reprinted from Ref. 21 with permission.
Urinary Vanilmandelic Acid (VMA) and 3 -Me thoxy- 4-hydr oxypheny 1 e thy lene Glycol (MHPG) After Their Purification on Sephadex LH-20 Ital. J. Biochem. 23(5) 345-355 (1974) CA 82 135112b... [Pg.37]

Analysis of Urinary Homovanillic Acid, Vanilmandelic Acid and 3,4-Dihydroxymandelic Acid by Mass Fragmento graphy... [Pg.107]

Critical Remarks on a Gas Chromatographic Determination of Homovanil-lic Acid and Vanilmandelic Acid Clin. Chim. Acta 50(2) 293-296 (1974) CA 81 934e... [Pg.148]

Melchert, H. U., and Hoffmeister, H. Determination of the Urinary Metabolites Hydroxyindoleacetic Acid, Vanilmandelic Acid, and Homovanillic Acid Using Lipophilic Gel Chromatography and Gas Chromatography... [Pg.173]

Mass Fragmentographic Determination of Vanilmandelic Acid, Homovanillic Acid and Isohomovanillic Acid in Human Body Fluids... [Pg.248]

Williams, C. M., and Greer, M. Diagnosis of Neuroblastoma by Quantitative Gas Chromatographic Analysis of Urinary Homovanillic and Vanilmandelic Acids... [Pg.275]

Gas Chromatography of Urinary Vanilmandelic Acid in Pheochromacytoma Clin. Chim. Acta 11(6) 495-500 (1965) CA 63 9856d... [Pg.275]

Determination of Vanilmandelic Acid and Homovanillic Acid in Urine... [Pg.282]

Wilk and co-workers (1965) proposed a degradative procedure for analysing vanilmandelic acid (VMA) to reduce chromatographic difficulties in which VMA is cleaved by sodium periodate, and the resulting vanillin detected by electron capture as its O-trifluoroacetate derivative. Electron-capture detection can also be used in the determination of homovanillic acid as its heptafluorobutyrate derivative (Sjoquist and Anggard, 1972). [Pg.68]

Williams, C.M. and Greer, M. (1962), Diagnosis of neuroblastoma by quantitative gas chromatographic analysis of urinary homovanillic and vanilmandelic acid. Clin. Chim. Acta, 7,880. [Pg.159]

See other pages where Vanilmandelic acid is mentioned: [Pg.26]    [Pg.753]    [Pg.761]    [Pg.118]    [Pg.206]    [Pg.1561]    [Pg.1561]    [Pg.34]    [Pg.304]    [Pg.296]    [Pg.282]    [Pg.127]    [Pg.212]    [Pg.140]    [Pg.190]    [Pg.283]    [Pg.111]    [Pg.333]    [Pg.718]    [Pg.97]    [Pg.321]    [Pg.111]    [Pg.332]    [Pg.717]    [Pg.296]    [Pg.53]    [Pg.68]    [Pg.69]    [Pg.164]   
See also in sourсe #XX -- [ Pg.69 ]



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