Over 25 alkaloids have been isolated from kratom. The most abundant alkaloids consist of three indoles and two oxindoles. The three indoles are mitragynine, paynanthine, and speciogynine-the first two of which appear to be unique to this species. The two oxindoles are mitraphylline and speciofoline.
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How many words in the English language have the letter 'e' in them?   The Oxford English Language Dictionary lists about 500,000 words and it is estimated that there are a further 500,000 scientific and technical terms that have not been c â¦ atalogued.