| 21. | Both isomeric levels are populated when produced directly.
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| 22. | In contrast to the isomeric thiazole, the two heteroatoms are in adjacent positions.
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| 23. | It is a colorless liquid is manufactured by the thermal dehydrogenation of isomeric diethylbenzenes.
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| 24. | Metastable isomeric transition is the only nuclear decay mode that approaches pure gamma emission.
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| 25. | Pseudouridylation is the isomerisation of the nucleoside uridine to the different isomeric form pseudouridine.
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| 26. | Several isomeric naphthoquinones are known, notably benzoquinone.
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| 27. | This isomeric form of hydrogen peroxide, oxywater, has not been synthesized experimentally.
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| 28. | It is one of two isomeric bromonaphthalenes, the other being 2-bromonaphthalene.
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| 29. | It is one of three isomeric benzenetriols.
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| 30. | It is a six-membered heterocyclic aromatic ring, one of several isomeric triazines.
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