| 11. | Indole is one of the constituent of perfumery importance present in buds.
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| 12. | It can also be indole positive or negative depending on the biotype.
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| 13. | In his book " De conditione et indole rusticorum in Hungaria"
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| 14. | Some indole alkaloids interact with other types of receptors.
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| 15. | This is a fairly common phenomenon, see e . g . indole.
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| 16. | It is now known that betalains are aromatic indole derivatives synthesized from tyrosine.
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| 17. | This enzyme participates in indole and ipecac alkaloid biosynthesis.
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| 18. | It represents an entirely new family of indole derivatives.
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| 19. | It focuses on building the tetracyclic unit before introducing the second indole unit.
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| 20. | Certain indole derivatives were important dyestuffs until the end of the 19th century.
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