prov:value
| - Maleic anhydride and other acid anhydrides useful herein have the general structure: wherein R and R??? are selected from the group consisting of hydrogen, halogen, and cyano (???C???N) groups, and alkyl, aryl, alkaryl, aralkyl, and cycloalkyl groups such as methyl, ethyl, propyl, octyl, decyl, phenyl, tolyl, xylyl, benzyl, cyclohexyl, and the like.
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