mitragynine molecule herbal alkaloid present kratom ketum mitragyna speciosa skeletal formula |
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| navigate by keyword : mitragynine molecule herbal alkaloid present kratom ketum mitragyna speciosa skeletal formula mitragynin biakbiak opioid receptor pain chronic banned thai thailand atoms atomic molecular compound composition chemical chemistry structure line drawing flat icon |
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| Mitragynine molecule. Herbal alkaloid present in kratom ketum, Mitragyna speciosa. Skeletal formula |
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