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GC376 3C-Like Protease inhibitor

Name: GC376
Brand: Selleck Chemicals
SKU: S0475
Rating: 5 (28 reviews)

Cat.No.S0475

GC376 is a 3CLpro (3C-like protease) inhibitor with IC50 of ~ 1.11 μM for the PEDV 3CLpro. This compound is active against the 3CLpro of multiple coronaviruses, including SARS-CoV.

Chemical Structure

Molecular Weight: 507.53

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Quality Control

Batch: Purity: >97%

Cited in Nature Medicine for its top-tier quality
COA
NMR
Datasheet
SDS

Cited in Nature Medicine for its top-tier quality
COA
NMR
Datasheet
SDS

Cited in Nature Medicine for its top-tier quality
COA
NMR
Datasheet
SDS

Related Targets	HDAC Caspase Proteasome Secretase MMP HCV Protease Cysteine Protease DPP Tyrosinase HIV Protease
Other 3C-Like Protease Inhibitors	Merbromin

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Formulation	Activity Description	PMID
HG23	Antiviral assay				Antiviral activity against Norovirus infected in human HG23 cells, ED50 = 0.3 μM.	23218713
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	507.53	Formula	C₂₁H₃₀N₃NaO₈S	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	1416992-39-6	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC(C)CC(C(=O)NC(CC1CCNC1=O)C(O)S(=O)(=O)[O-])NC(=O)OCC2=CC=CC=C2.[Na+]

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (197.03 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.830mg/ml (1.64mM)	Taking the 1 mL working solution as an example, add 50 μL of 16.6 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5.000mg/ml (9.85mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

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

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

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.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	PEDV 3CLpro (Cell-free assay) 1.11 μM
In vitro	Molnupiravir and GC376 show a synergistic activity on SARS-CoV-2 at 48 h, and an additive activity on SARS-CoV-2 at 72 h.
In vivo	GC376, a dipeptidyl bisulfite adduct salt, is a 3CLpro (3C-like protease) inhibitor that exerts strong inhibitory effects on picornaviruses and coronaviruses, including SARS-CoV.
References	[1] https://pubmed.ncbi.nlm.nih.gov/32098094/ [2] https://pubmed.ncbi.nlm.nih.gov/35889194/ [3] https://pubmed.ncbi.nlm.nih.gov/33691601/

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Handling Instructions

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