| 41. | The 4, 4'isomer is most widely used.
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| 42. | The more common d-isomer possesses a strong smell of oranges.
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| 43. | Infrared spectroscopy has been used extensively to distinguish between isomers.
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| 44. | The commercially used HBCD is in fact a mixture of different isomers.
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| 45. | The lifetime of the isomer has been measured to be 6? hours.
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| 46. | Nuclear isomers have also been investigated for use in pure fusion weaponry.
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| 47. | It is a structural isomer of the alternant PAH pyrene.
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| 48. | Arbutin actually exists in two isomers, alpha and beta.
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| 49. | The bases nearest to the junction point determine which stacked isomer dominates.
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| 50. | Mixtures of cis isomer and trans isomer are usually obtained.
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