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paltusotine   Click here for help

GtoPdb Ligand ID: 14237

Synonyms: compound 22 [PMID: 36655128] | CRN-00808 | CRN00808 | Palsonify®
Approved drug PDB Ligand
paltusotine is an approved drug
Compound class: Synthetic organic
Comment: Paltusotine (CRN00808) is a small molecule, orally bioavailable somatostatin receptor type 2 (SST2) agonist [5-6]. It acts to inhibit production of growth hormone and insulin-like growth factor 1.
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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.

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View interactive charts of activity data across species
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 5
Hydrogen bond donors 2
Rotatable bonds 3
Topological polar surface area 85.64
Molecular weight 456.49
XLogP 1.82
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 C1=CC(=C(C(=C1)C#N)O)C2=CC=C3C(=C2)C(=C(C=N3)C4=CC(=CC(=C4)F)F)N5CCC(CC5)N
Isomeric SMILES C1CN(CCC1N)C2=C3C=C(C=CC3=NC=C2C4=CC(=CC(=C4)F)F)C5=CC=CC(=C5O)C#N
InChI InChI=1S/C27H22F2N4O/c28-19-10-18(11-20(29)13-19)24-15-32-25-5-4-16(22-3-1-2-17(14-30)27(22)34)12-23(25)26(24)33-8-6-21(31)7-9-33/h1-5,10-13,15,21,34H,6-9,31H2
InChI Key GHILNKWBALQPDP-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
Paltusotine (CRN00808) was advanced to clinical evaluation to determine safety and efficacy for the treatment of acromegaly [1,3-4], and neuroendocrine tumour-associated carcinoid syndrome [2]. First approval was granted by the FDA in September 2025, to treat acromegaly.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT07087054 Carcinoid Syndrome Efficacy Study Featuring an Oral Daily Paltusotine Regimen Phase 3 Interventional Crinetics Pharmaceuticals Inc.
NCT05192382 A Study to Evaluate the Safety and Efficacy of Paltusotine for the Treatment of Acromegaly (PATHFNDR-2) Phase 3 Interventional Crinetics Pharmaceuticals Inc.
NCT04837040 A Study to Evaluate the Safety and Efficacy of Paltusotine for the Treatment of Acromegaly Phase 3 Interventional Crinetics Pharmaceuticals Inc.