Lansoprazole Intermediate - TFPB Crystal Forms
Publication Date: 2003-Jul-03
The IP.com Prior Art Database
2-[((3-Methyl-4-(2,2,2-Trifluoroethoxy)-2-Pyridinyl)-Methyl)-Thio]-1H-Benzimidazole (TFPB) is used as intermediate in the preparation of Lansoprazole. Various samples of TFPB were analyzed by X-Ray Powder diffraction and found to contain different crystal forms (I, II, III, IV).