thioguanine   Click here for help

GtoPdb Ligand ID: 6845

Synonyms: 6-mercaptoguanine | 6-thioguanine | Lanvis® | Tabloid®
Approved drug PDB Ligand
thioguanine is an approved drug (FDA (1966))
Compound class: Synthetic organic
Comment: Inhibits inosine-5'-monophosphate dehydrogenase 1.

thioguanine is commercially available from our sponsors

2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 3
Hydrogen bond donors 3
Rotatable bonds 0
Topological polar surface area 115.47
Molecular weight 167.03
XLogP 0.6
No. Lipinski's rules broken 0

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES Nc1nc(=S)c2c([nH]1)nc[nH]2
Isomeric SMILES Nc1nc(=S)c2c([nH]1)nc[nH]2
InChI InChI=1S/C5H5N5S/c6-5-9-3-2(4(11)10-5)7-1-8-3/h1H,(H4,6,7,8,9,10,11)
InChI Key WYWHKKSPHMUBEB-UHFFFAOYSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
No information available.
Summary of Clinical Use Click here for help
Initially used as a cytostatic agent in the treatment of acute lymphoblasic leukemia, but is more recently being used to treat ulcerative colitis (UC, a form of inflammatory bowel disease) [2], and some autoimmune diseases.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Antineoplastic/antimetabolite compound with many possible actions, the over-arching consequence of which is to impede the use and synthesis of the purine nucleotides. This drug is an analogue of guanine and interferes with nucleic acid biosynthesis.
External links Click here for help
For extended ADME data see the following:

Electronic Medicines Compendium (eMC)