| abstract |
Provided is a crystal of a high-purity unsaturated carboxylic acid amide compound, which is useful as a fine chemical such as a pharmaceutical product, an agrochemical, a polymer material, a functional material or intermediates of these materials.nA crystal of the present invention is characterized by containing 95% by area or more of an unsaturated carboxylic acid amide compound represented by formula (1), and is also characterized by having a 2θ peak within at least one range selected from among 6.0-8.0, 12.0-13.5 and 16.5-17.5 and within the range of 29.0-30.0, and by having no 2θ peak within the range of 14.0-15.0 in the X-ray diffraction. |