GtoPdb is requesting financial support from commercial users. Please see our sustainability page for more information.

TMP-301   Click here for help

GtoPdb Ligand ID: 14266

Synonyms: example 17 [WO2015008073] | HTL-14242 | HTL0014242 | HTL14242 | TMP301
PDB Ligand
Compound class: Synthetic organic
Comment: TMP-301 (formerly HTL0014242) is a selective, and orally bioavailable mGluR5 negative allosteric modulator (NAM) [1].
Click here for help

Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

✖

View interactive charts of activity data across species
2D Structure
Click here for help

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.

✖
Click here for structure editor
Physico-chemical Properties
Click here for help

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.

✖
Hydrogen bond acceptors 4
Hydrogen bond donors 0
Rotatable bonds 2
Topological polar surface area 60.87
Molecular weight 310.71
XLogP 0.13
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
Click here for help

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/)

✖
Canonical SMILES C1=CC(=NC=C1F)C2=CC(=NC=N2)C3=CC(=CC(=C3)C#N)Cl
Isomeric SMILES C1=CC(=NC=C1F)C2=CC(=NC=N2)C3=CC(=CC(=C3)C#N)Cl
InChI InChI=1S/C16H8ClFN4/c17-12-4-10(7-19)3-11(5-12)15-6-16(22-9-21-15)14-2-1-13(18)8-20-14/h1-6,8-9H
InChI Key FQAXDSVNYVVQSE-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
TMP-301 was progressed to clinical trial as a novel agent for the treatment of alcohol and substance use disorders. It was proposed to reduce the risk of relapse. In late October 2025 it was revealed that the developer was TMP-301 pausing the TMP-301 alcohol use disorder program.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT06648668 A Study to Investigate the Interaction Between TMP-301 and Cocaine. Phase 1 Interventional Tempero Bio, Inc.
NCT06648655 A Study to Investigate the Safety and Efficacy of TMP-301 Compared to Placebo in Adult Patients With Alcohol Use Disorder Phase 2 Interventional Tempero Bio, Inc.
NCT06025396 Multiple Ascending Dose Study of TMP-301 in Healthy Subjects Phase 1 Interventional Tempero Bio, Inc.
NCT03785054 Phase 1, Healthy Subject, Safety, Tolerability and Pharmacokinetic Study of mGlu5 NAM HTL0014242 Phase 1 Interventional Nxera Pharma UK Limited This was the first in humans study for HTL0014242/TMP-301.