Halin Molisch shine gwajin sinadarai da ake amfani da shi don gano kasancewar carbohydrates, musamman kasancewar kowane kwayar halitta da za a iya juyar da shi zuwa furfur a gaban sulfuric acid. Gwajin ya ƙunshi ƙara ɗigon digo na alpha-naphthol a cikin maganin gwajin, sannan ƙari na sulfuric acid mai ƙarfi. Samuwar launi mai launin shuɗi ko ja-violet a mahaɗin ruwa biyu yana nuna kyakkyawan gwaji don kasancewar carbohydrates. An ba wa gwajin sunan wani masanin kimiyar Austriya Hans Molisch, wanda ya fara bayyana ta a shekarar 1907.