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Methylvanillylecgonine or vanillylmethylecgonine is a cocaine analog and metabolite of cocaine found in human urine (possibly with co-ingestion of vanillin-vanilla containing products, as a result of cleavage and binding in vivo but more probably the result of the same metabolic pathways by which vanillylmandelic acid is formed)
References
Methylvanillylecgonine Wikipedia(Text) CC BY-SA