1-5'-5-35--4--5--45--3--3'H--31'--1--2- CRYSTALLINE FORMS OF 1-5'-5-35-DICHLORO-4-FLUOROPHENYL-5-TRIFLUOROMETHYL-45-DIHYDROISOXAZOL-3-YL-3'H-SPIROAZETIDINE-31'-ISOBENZOFURAN-1-YL-2-METHYLSULFONYLETHANONE

摘要

The present invention relates to a process for the preparation of 1- (5 ''- (5- (3,5-dichloro-4-fluorophenyl) -5- (trifluoromethyl) -4,5-dihydroisooxazole- -3''H-spiro [azetidine-3,1''-isobenzofuran] -l-yl) -2- (methylsulfonyl) ethanone. The present invention also describes compositions and methods for treating parasitic infections or intravital infections in an animal in need of such treatment. The present invention also relates to a method of producing a crystalline form.