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Cat. No.: HY-183983

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PAR4 antagonist 9

PAR4 antagonist 9 is an orally active protease-activated receptor 4 (PAR4) antagonist with an IC₅₀ of 2 nM against human targets. PAR4 antagonist 9 functionally modulates PAR4 and inhibits platelet aggregation. PAR4 antagonist 9 can be used in studies related to arterial thrombosis.

For research use only. We do not sell to patients.

CAS No.: 2173066-25-4
Formula: C₂₉H₂₉FN₆O₅S
Molecular Weight:592.64

Storage:

Please store the product under the recommended conditions in the Certificate of Analysis.

PAR4 antagonist 9 Chemical Structure

CAS No.: 2173066-25-4

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Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biological Activity
- Description
- IC₅₀ & Target
- In Vitro
- In Vivo
Chemical Information
Purity & Documentation
References
Calculators
Help & FAQs
Classifications
Bioz

Biological Activity

Description

IC₅₀ & Target^[1]

PAR4

2 nM (IC₅₀)

All Protease Activated Receptor (PAR) Isoforms :

In Vitro

PAR4 antagonist 9 (Compound 32) exhibits favorable metabolic stability, with a remaining ratio of 85% in the human-derived system and 100% in the rat-derived system in metabolic stability tests^[1].
PAR4 antagonist 9 exhibits potent PAR4 antagonistic activity, with an FLIPR IC₅₀ of 2 nM and a γ-Thr PRP IC₅₀ of 4 nM^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

PAR4 antagonist 9 (Compound 32) (3 mg/kg; p.o.; single dose) produces complete, concentration-dependent inhibition of PAR4-mediated platelet aggregation for at least 7 h in cynomolgus monkeys, with effects reversing as plasma concentrations fall below 10 nM^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model:

Cynomolgus monkeys (2 animals, healthy)^[1]
Dosage:

3 mg/kg
Administration:

p.o.; single dose
Result:

Achieved complete suppression of PAR4 agonist peptide-stimulated platelet aggregation at 3 h and 7 h post-dosing.
Attained plasma levels of 78.63 nM (monkey 1) and 77.87 nM (monkey 2) at 3 h, followed by concentrations of 49.44 nM (monkey 1) and 59.11 nM (monkey 2) at 7 h.
Lost sustained antithrombotic activity at 30 h post-dosing as efficacy returned to baseline, with plasma concentrations declining to 6.65 nM (monkey 1) and 1.04 nM (monkey 2).

Chemical Information

CAS No. 2173066-25-4
Molecular Weight 592.64
Formula C₂₉H₂₉FN₆O₅S
SMILES

CCOC1=NC2=CC(C)=CC(C3=NC4=C(S3)C=C(C(F)=C4)O[C@H]([C@H](OC(NC5=CN=C(N=C5)CCO)=O)C)C)=C2N=C1
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation

Handling Instructions (2659 KB)

References

[1]. Halpern OS, et al. Solubility-Driven Lead Optimization of PAR4 Antagonists and Evaluation of a Phosphate Ester Prodrug Delivery Strategy. ACS Med Chem Lett. 2026 May 11.

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Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

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100 mg

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Biological Activity
- Description
- IC₅₀ & Target
- In Vitro
- In Vivo
Chemical Information
Purity & Documentation
References

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PAR4 antagonist 9

All Protease Activated Receptor (PAR) Isoforms

Biological Activity

Chemical Information

Purity & Documentation

References

Calculators

Help & FAQs

PAR4 antagonist 9 Related Classifications

HY-183983 Related Classifications