Tioguanine (INN, BAN), or thioguanine (AAN, USAN), also commonly referred to as 6-thioguanine (6-TG); the trade name is Lanvis (Manufacturer: GlaxoSmithKline), formerly under the trade name Tabloid. 6-TG belongs to the thiopurine family of drugs that also include mercaptopurine and azathioprine, which are examples of antimetabolites. It is a purin...