Buscogast

Hyoscine butylbromide, also known as butylscopolamine or scopolamine butylbromide, is a quaternary ammonium derivative of the tropane alkaloid hyoscine (scopolamine) that functions as an anticholinergic antispasmodic agent.[1][2] With the chemical formula C21H30BrNO4 and a molecular weight of 440.37 g/mol, it is poorly absorbed from the gastrointestinal tract due to its quaternary structure, allowing it to exert primarily peripheral effects on smooth muscle without significant central nervous system penetration.[3][4]