| 31. | Depending on the R substituent, the exterior of cage can be further modified.
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| 32. | Another change is the replacement of the 5-phenyl chlorine substituent by bromine.
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| 33. | The substituent and molecular weight of the polymer influences the electronic properties of polysilane.
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| 34. | The variable-substituent relation is homogeneous in that it relates types to types.
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| 35. | A methyl ester substituent was reported in 1958.
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| 36. | The larger the substituent, the greater the selectivity for the ?-receptor.
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| 37. | When the substituent is axial, it is brought near to an axial gamma hydrogen.
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| 38. | When the substituent is n-butyl the reaction product is the classical Perkow adduct.
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| 39. | Those compounds with the 4-propionoxy substituent appear to be the most potent analgesics.
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| 40. | A small R 1 substituent is necessary to maintain the rapid oral bioavailability of triptans.
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