Skatole
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Skatole or 3-methylindole is a mildly toxic white crystalline organic compound with chemical formula C9H9N and CAS number 83-34-1. It occurs naturally in feces, beets, and coal tar, and has a strong fecal odor. In low concentrations it has a flowery smell and is found in several essential oils, including those in orange blossoms and jasmine. It is therefore used as a fragrance in many perfumes, and sometimes as an ingredient in vanilla ice-cream.
Its name is derived from skat, the Greek word for dung.