Name: Nirmatrelvir (PF-07321332)
Brand: Selleck Chemicals
SKU: S9866
Rating: 5 (7 reviews)

Nirmatrelvir (PF-07321332) is an reversible covalent inhibitor of SARS-CoV-2 main protease (M^pro, also referred to as 3CL protease) with an ki of 3.11 nM. PF-07321332 binds directly to the catalytic cysteine (Cys145) residue of the enzyme.

Nirmatrelvir (PF-07321332) Chemical Structure

CAS: 2628280-40-8

Selleck's Nirmatrelvir (PF-07321332) has been cited by 7 publications

Purity & Quality Control

Batch: Purity: 99.99%

99.99

Nirmatrelvir (PF-07321332) Related Products

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Choose Selective SARS-CoV Inhibitors

Biological Activity

Description

Nirmatrelvir (PF-07321332) is an reversible covalent inhibitor of SARS-CoV-2 main protease (M^pro, also referred to as 3CL protease) with an ki of 3.11 nM. PF-07321332 binds directly to the catalytic cysteine (Cys145) residue of the enzyme.

Targets

SARS-CoV-2 Mpro ^[1]

3.11 nM(ki)

In vitro
In vitro	Nirmatrelvir (PF-07321332) is a reversible covalent inhibitor of SARS-CoV-2 main protease (M<sup>pro</sup>, also known as 3CL protease), and ki is 3.11 nM. PF- 07321332 directly binds to the catalytic cysteine (Cys145) residue of the enzyme.<sup><a class="sref" href="#s_ref">[1]</a></sup>
Kinase Assay	Enzyme kinetics assay
Kinase Assay	Test compounds and SARS-CoV-2 Mpro enzyme were incubated at a 1:1 molar ratio of 2 μM compound and 2 μM enzyme in assay buffer for 20 minutes. The mixture was then diluted 50-fold into assay buffer followed by a transfer of 5 μl to wells of a black low volume 384-well assay plate. Enzyme activity was monitored on a BMG Pherastar at Ex/Em of 340 nm/460 nm after addition of 5 μl 60 μM peptide substrate. Final reaction conditions were 20 nM enzyme with 20 nM compound and 30 μM peptide substrate.
Cell Research	Cell lines	HCoV-229E in Huh-7 cells
	Concentrations	0.62 µM
	Incubation Time	2 days
	Method	hCoV-229E experiments were performed on Huh-7 cells at an MOI of 0.002 and infection determined by in-cell ELISA 2 days later

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-01-11)
NCT05487040	Terminated	COVID-19	Pfizer	September 7 2022	Phase 1
NCT05339334	Completed	Healthy Participants	Pfizer	March 10 2022	Phase 1
NCT05263921	Completed	Bioavailability	Pfizer	March 10 2022	Phase 1
NCT05129475	Completed	Healthy Participants	Pfizer	November 12 2021	Phase 1

References

Chemical Information & Solubility

Molecular Weight	499.53	Formula	C₂₃H₃₂F₃N₅O₄
CAS No.	2628280-40-8	SDF	--
Smiles	CC(C)(C)C(NC(=O)C(F)(F)F)C(=O)N1CC2C(C1C(=O)NC(CC3CCNC3=O)C#N)C2(C)C
Storage (From the date of receipt)	3 years -20°C powder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years -20°C powder		1 month-20°Cin solvent

In vitro
Batch:

DMSO : 100 mg/mL ( (200.18 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 100 mg/mL

Water : 2 mg/mL

Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

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In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

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% DMSO + % + % Tween 80 + % ddH₂O

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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