The detection of sulphonamido groups.
D000447:Aldehydes; D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography; D007202:Indicators and Reagents; D013449:Sulfonamides / Q000032:analysis*
D000447:Aldehydes; D007202:Indicators and Reagents; D013449:Sulfonamides