prov:value
| - 6 carbon atoms, ??-substituted ethyl, cycloalkyl usually having 5 to 7 carbon atoms, aralkyl usually having 7 to 15 carbon atoms, alkaryl usually having 7 to 15 carbon atoms or ##STR5## wherein R5 and R6 each are hydrogen, alkyl usually having 1 to 6 carbon atoms, halo such as chloro, bromo, fluoro and iodo, nitro, cyano, alkoxycarbonyl wherein said alkoxy has 1 to 6 carbon atoms, sulfonamido (--
|