Sucralose is an artificial sweetener used as an excipient in pharmaceuticals. The purity test for sucralose listed in the Pharmaceutical Excipients Standard 2013 original required analysis using packed column GC. However the updated Pharmaceutical Excipients Standard 2018, announced in March 2018, was amended and required a method for the analysis of methanol in sucralose using a capillary column with headspace GC. In this application note, we report an analysis conducted in accordance with the revision, and that the results were excellent.