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An aryl sulfate obtained by sulfation of the phenolic hydroxy group of the anti-inflammatory drug, E3040. It is one of the major metabolites of E3040." []

3-Methoxy-4-hydroxyphenylethyleneglycol sulfate (MHPG-SO4) is the major metabolite of noradrenaline in serum. Chronic schizophrenics have lower serum levels than healthy individuals. Treatment of both groups with 7 daily 3-mg doses of haloperidol caused similar decreases in MHPG-SO4 concentration (PMID: 7343757). In human urine, MHPG-SO4 constitutes 44% of the total 3-methoxy-4-hydroxyphenylethylene glycol (PMID: 7379456).

3, 4-Dihydroxyphenylglycol O-sulfate is a norepinephrine metabolite, a transmitter produced by sympathetic nerves, in particular those innervating mesenteric organs. This sulfate conjugate is produced by extrahepatic tissues (mesenteric organs) and eliminated by the kidneys. (PMID: 8627312).

Plasma norepinephrine sulfate increases after sympathetic nervous system activation by an exhausting incremental exercise test and remain elevated up to 2 h after exercise. (PMID: 8330610). Human platelets contribute to the formation of plasma norepinephrine sulfate by norepinephrine uptake, intraplatelet sulfoconjugation and release of norepinephrine sulfate. (PMID: 7968241). Higher concentrations of norepinephrine sulfate in portal venous than arterial plasma indicate substantial production of norepinephrine by mesenteric organs. (PMID: 8627312). Intravenously infused norepinephrine is sulfoconjugated in humans, indicating that a major part of NE is sulfoconjugated in blood or at sites easily accessible from blood. (PMID: 12020748).

Hydroquinone sulfate, also known as quinol sulfate, is a member of the class of compounds known as phenylsulfates. Phenylsulfates are compounds containing a sulfuric acid group conjugated to a phenyl group.