title: A new crystal form of nateglinide.
abstract: OBJECTIVE
  To find a new crystal structure of S-form in nateglinide [N-(trans-4-isopropylcyclohexylcarbonyl)-D-phenylalanine]. The XRD, IR patterns and data were given and the melting point was determined.
  
  
  METHODS
  Phase analysis was performed by X-ray powder diffraction, IR and elemental analysis and the melting point was determined by differential scan calorimetry.
  
  
  RESULTS
  S-form nateglinide is different from H-form or B-form. The melting point is 172.04 degrees C.
  
  
  CONCLUSIONS
  The S-form nateglinide is a new crystal form.
authors.affiliation: Chemistry and Physics Centralaboratory, Nanjing Normal University, Nanjing 210097, China. ligang-1959@263.net
authors.forename: G
authors.initials: G
authors.lastname: Li
authors.forename: G Q
authors.initials: GQ
authors.lastname: Su
authors.forename: Q W
authors.initials: QW
authors.lastname: Xu
authors.forename: C Q
authors.initials: CQ
authors.lastname: Zhu
mesh_terms: D003460:Crystallization; D018360:Crystallography, X-Ray; D003510:Cyclohexanes / Q000737:chemistry*; D007004:Hypoglycemic Agents / Q000737:chemistry*; D000077715:Nateglinide; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000737:chemistry*; D033362:Powder Diffraction; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D003510:Cyclohexanes; D007004:Hypoglycemic Agents; D000077715:Nateglinide; D010649:Phenylalanine