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Drug

Thioguanine

Established medicine
ClassInosine-5'-monophosphate dehydrogenase (IMPDH) inhibitorResearchOngoing clinical research
Also known as 2-Amino 6MP, 2-Amino-6-mercaptopurine, 2-Amino-6-merkaptopurin, 2-Amino-6-purinethiol+18 more

2-Amino 6MP, 2-Amino-6-mercaptopurine, 2-Amino-6-merkaptopurin, 2-Amino-6-purinethiol, 2-Aminopurin-6-thiol, 2-Aminopurine-6(1H)-thione, 2-Aminopurine-6-thiol, 6-Mercapto-2-aminopurine, 6-Mercaptoguanine, 6-TG, 6-Thioguanine, 6TG, TG, Tabloid, ThG, Tioguanin, Tioguanina, Tioguanine, Tioguaninum, 2-Amino-1,7-dihydro-6H-purine-6-thione, 2-amino-1,9-dihydropurine-6-thione, 6H-Purine-6-thione, 2-amino-1,7-dihydro- (9CI).

18
Active clinical trials
2
Protein targets
Latest activity
beta

Recent clinical, regulatory, research and industry developments relating to this drug.

Total Therapy XVII for Newly Diagnosed Patients With Acute Lymphoblastic Leukemia and Lymphoma

Clinical trial2026-06-17Results expected Q3 2026 · ClinicalTrials.gov

Profile

Identifiers & mechanism

Canonical identifiers, marketed brand names and mechanism, resolved across RxNorm, ChEMBL and ATC.

Canonical name
Thioguanine
Aliases & brands
2-Amino 6MP2-Amino-6-mercaptopurine2-Amino-6-merkaptopurin2-Amino-6-purinethiol2-Aminopurin-6-thiol2-Aminopurine-6(1H)-thione2-Aminopurine-6-thiol6-Mercapto-2-aminopurine6-Mercaptoguanine6-TG6-Thioguanine6TGTGTabloidThGTioguaninTioguaninaTioguanineTioguaninum2-Amino-1,7-dihydro-6H-purine-6-thione2-amino-1,9-dihydropurine-6-thione6H-Purine-6-thione, 2-amino-1,7-dihydro- (9CI)
RxNorm CUI
10485
ChEMBL ID
CHEMBL727
ATC codes
L01BB03
UNII
WIX31ZPX66
Primary mechanism
Inosine-5'-monophosphate dehydrogenase (IMPDH) inhibitor

Pharmacology & targets

2 targets

Known molecular targets and mechanisms supported by curated pharmacology databases.

INHIBITORInosine-5'-monophosphate dehydrogenase (IMPDH) inhibitor
INHIBITORInosine-5'-monophosphate dehydrogenase (IMPDH) inhibitor

Clinical trials

85 trials

The current development programme across all trial phases — status mix, phase distribution and the late-stage studies shaping the evidence base.

Development programme
CLINICALTRIALS.GOV · LIVE REGISTRY
85
registered trials across all phases
LATEST COMPLETION 2026
18
Active studies
12
Recruiting
54
Late-stage (III+)
50
Completed
17
Discontinued
PHASE DISTRIBUTIONn = 85
Phase 13Phase 1 / 23Phase 225Phase 2 / 33Phase 341Phase 46Phase N / A4

Late-stage studies

Phase III+ trials still open or recently active — where late-stage evidence is being generated.

Recent completions

Trials that read out recently, adding to the completed evidence base.

References & data sources
  • RxNorm (U.S. National Library of Medicine) — drug identity
  • ChEMBL (EMBL-EBI) & UniProt — pharmacology and targets
  • ClinicalTrials.gov — clinical trials