Pharmacopoeia Drug Testing (Montmorillonite, Aripiprazole, Nateglinide)

 The applications of X-ray diffraction (XRD) in the Pharmacopeia are generally single-crystal diffraction and powder diffraction. Single-crystal diffraction can provide very rich microstructural information, but sample preparation is more complicated and it is difficult to distinguish multi-component samples. Powder diffraction samples are easy to obtain and are widely used in the qualitative and quantitative analysis of physical phases. With the development of science and technology, powder diffraction applications are becoming increasingly widespread.