Section 303A. No person other than a registered druggist shall engage in the business of manufacturing, buying, selling, transporting, importing, exporting or dealing in methyl alcohol, or wood alcohol, so called, or any preparation, other than shellac varnish or shellac solvent or paint remover or varnish remover, used for manufacturing or commercial purposes which contains more than three per cent of methyl alcohol and is intended for use other than as a beverage, without being licensed so to do as provided in section three hundred and three B.