| 41. | "' Pentalene "'is a polycyclic hydrocarbon composed of two fused cyclopentadiene rings.
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| 42. | It is a member of the unsaturated polycyclic hydrocarbons class of compounds and a tetramer of benzyne.
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| 43. | One study showed that the reaction lends itself to cascade reactions to form more complex polycyclic aromatic hydrocarbons
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| 44. | The disease is polycyclic in nature even though the conidia are not as virulent as the ascospores.
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| 45. | Upon infection the pathogen continues to produce conidia throughout the season resulting in a polycyclic disease cycle.
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| 46. | :Wisps of red in the cloud are organic molecules called polycyclic aromatic hydrocarbons ( PAHs ).
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| 47. | Significant research on polycyclic musks and nitromusks has taken place since the 1990s in biomonitoring studies,.
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| 48. | His scope extends further to polycyclic heterocycles and the total synthesis of ( + )-aphanorphine.
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| 49. | "' Octalene "'is a polycyclic hydrocarbon composed of two fused cyclooctatetraene rings.
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| 50. | "' Phenanthrenedione "'is a cytotoxic derivative of the polycyclic aromatic hydrocarbon phenanthrene.
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