This invention provides an improved process for the preparation of S(+)-ibuprofen and its salts thereof from the mixtures of R(-) and S(+) 2-(4-Isobutylphenyl) propionic acid (termed as racemic mixtures of Ibuprofen) or soluble salts thereof employing N-alkyI or N-cycloalkyI or N-aralkyl-D-glucamines or salts thereo...

This Invention provides εn improved method for the preparation of crystεlline (εimethylεine)methy1./2-furanyl-.7 N-methyl-2-nitro-1.1-ethenediεmine hydrechierice (form 1) designated as Rεnitidine hydrechleride from renitidine bεse empleying ε synergestic composition consisting of methylcehol and isoprepylelcehel...