| 31. | Lactic acid is chiral, consisting of two optical isomers.
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| 32. | Its isomer, tretinoin, is also an acne drug.
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| 33. | The energy difference between two isomers is called " isomerization energy ".
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| 34. | It is an isomer of isophthalic acid and terephthalic acid.
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| 35. | The most desirable isomers were polycyclics, loosely resembling ladderanes.
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| 36. | Intramolecular lyases, oxidoreductases and transferases catalyze the interconversion of structural isomers.
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| 37. | The most common catechin isomer is the ( + )-catechin.
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| 38. | An isomer exists of this compound, 1, 3-cyclohexadiene.
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| 39. | Atropisomers are conformational isomers which can be separated due to restricted rotation.
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| 40. | This colourless solid is an isomer of phthalic acid and terephthalic acid.
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