โ Scribed by Israel Goldberg; Yigal Becker
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Crystal polymorphism of the anti-diabetic drug Tolbutamide (TB) has been studied using various analytical techniques. TB crystallizes in four polymorphic forms (Forms I-IV), which differ in their mode of packing and in molecular conformation but with similar hydrogen bonding synthon (urea tape motif
Solution-mediated phase transformation (SMPT) has been used as a focused technique to rapidly identify the stable polymorph of a given substance. Despite ample precedence for acetonitrile being a good solvent for SMPT of sulfamerazine (SMZ), samples from specific lots of SMZ failed to convert from F
Three polymorphs of sibenadet hydrochloride (AR-C68397AA, Viozan TM ) have been shown to exist at ambient temperature and have been characterized. Each undergoes a solid-state transition to a common high temperature form, which melts at approximately 2208C. X-ray powder diffraction (XRPD) indicates
A new polymorphic form of Alprazolam (Xanax 1 ), 8-chloro-1-methyl-6phenyl-4H- [1,2,4]triazolo-[4,3-a][1,4]benzodiazepine, C 17 H 13 ClN 4 , has been investigated by means of X-ray powder diffraction (XRPD), single crystal X-ray diffraction, and differential scanning calorimetry (DSC). This polymorp
For decades, carbamazepine (CBZ) has served as a model compound for groups engaged in the study of crystal polymorphism. Despite considerable effort, crystal structures for only three of its four anhydrous forms have previously been determined. Herein, we report the first single crystal X-ray struct