X-ray single crystal analysis not only has been applied to chemistry, physics, mineralogy and metallurgy, but also has been put to use in many other scientific fields, for example, molecular biology, botany, pharmaceutics, medicine, and so on. Especially, it has been taking important part in researching macromolecular structure-activity relationship in life sciences at present. While X-ray single crystal analysis was developed continually, powder X-ray diffraction analysis was also utilized in pharmaceutica...