From August 18th 2026, GtoPdb will require users to register to use the website. Please see our blog post for more information.

nordihydroguiaretic acid   Click here for help

GtoPdb Ligand ID: 4265

Abbreviated name: NDGA
Synonyms: Actinex®
Approved drug
nordihydroguiaretic acid is an approved drug (FDA (1992))
Compound class: Natural product
Comment: Although we show the non-isomeric molecule, the approved drug masoprocol is a specific stereoisomer of NGDA, with IUPAC name 4-[(2S,3R)-4-(3,4-dihydroxyphenyl)-2,3-dimethylbutyl]benzene-1,2-diol (as shown in the PubChem record). The ChEMBL record displays the non-stereoisomeric molecule. PubChem lists 6 stereoisomers of this compound.
2D Structure
Click here for help
Click here for structure editor
Physico-chemical Properties
Click here for help
Hydrogen bond acceptors 0
Hydrogen bond donors 4
Rotatable bonds 5
Topological polar surface area 80.92
Molecular weight 302.15
XLogP 5.49
No. Lipinski's rules broken 1

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
Click here for help
Canonical SMILES CC(C(Cc1ccc(c(c1)O)O)C)Cc1ccc(c(c1)O)O
Isomeric SMILES CC(C(Cc1ccc(c(c1)O)O)C)Cc1ccc(c(c1)O)O
InChI InChI=1S/C18H22O4/c1-11(7-13-3-5-15(19)17(21)9-13)12(2)8-14-4-6-16(20)18(22)10-14/h3-6,9-12,19-22H,7-8H2,1-2H3
InChI Key HCZKYJDFEPMADG-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/)

Download 2D Structure Click here for help
Canonical SMILES Download
Isomeric SMILES Download
InChI standard identifier Download
InChI standard key Download

Molecular structure representations generated using Open Babel