6-Sulfatoxymelatonin (also known as aMT6s, 6-Hydroxymelatoninsulfate, 6-sulphatoxymelatonin) is the conjugated sulfate and end-metabolite of its precursor 6-hydroxymelatonin (6-OHM), and is the major metabolite of the pineal gland hormone and neurotransmitter melatonin; it is excreted in urine and feces.
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