ephemeral1

Why do we have to redissolve the product we get from the reaction of cyclopentadiene with maleic anhydride? Is it to remove the impurities? The endo-norbornene-5,6-cis-dicarboxylic anhydride product I got from the reaction after the second recrystallization had a melting point 24 degrees lower than the expected melting point. What do you think could affect the final product?