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TAT-CN21

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Catalog No. TP2862

TAT-CN21 is a potent and highly selective inhibitory peptide for CaMKII with an IC50 of 77 nM. This product achieves cell permeability through the TAT sequence (YGRKKRRQRRR), effectively blocking the catalytic activity of CaMKII and its interaction with the NMDA receptor subunit GluN2B. It plays a critical role in modulating excitotoxicity, reducing glutamate-induced neuronal damage, and serves as a core pharmacological tool for researching ischemic brain injury, neurodegenerative diseases, and synaptic plasticity.

TAT-CN21
Other Forms of TAT-CN21:
TAT-CN21 (scrambled)TP3242
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TAT-CN21

Copy Product Info
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Catalog No. TP2862
TAT-CN21 is a potent and highly selective inhibitory peptide for CaMKII with an IC50 of 77 nM. This product achieves cell permeability through the TAT sequence (YGRKKRRQRRR), effectively blocking the catalytic activity of CaMKII and its interaction with the NMDA receptor subunit GluN2B. It plays a critical role in modulating excitotoxicity, reducing glutamate-induced neuronal damage, and serves as a core pharmacological tool for researching ischemic brain injury, neurodegenerative diseases, and synaptic plasticity.
Pack SizePriceUSA WarehouseGlobal WarehouseQuantity
1 mg$99-In Stock
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In Stock Estimated shipping dateUSA Warehouse[1-2 days] Global Warehouse[5-7 days]
All TargetMol products are for research purposes only and cannot be used for human consumption. We do not provide products or services to individuals. Please comply with the intended use and do not use TargetMol products for any other purpose.
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Appearance:Solid
Color:White
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Product Introduction

Bioactivity
Description
TAT-CN21 is a potent and highly selective inhibitory peptide for CaMKII with an IC50 of 77 nM. This product achieves cell permeability through the TAT sequence (YGRKKRRQRRR), effectively blocking the catalytic activity of CaMKII and its interaction with the NMDA receptor subunit GluN2B. It plays a critical role in modulating excitotoxicity, reducing glutamate-induced neuronal damage, and serves as a core pharmacological tool for researching ischemic brain injury, neurodegenerative diseases, and synaptic plasticity.
Targets&IC50
CaMK II:77 nM
In vitro
In primary hippocampal neurons, TAT-CN21 (1-20 µM) significantly reduces glutamate-induced excitotoxic death by inhibiting CaMKII substrate phosphorylation and disrupting pathological CaMKII-GluN2B complex formation, with efficacy dependent on administration timing [1].
In vivo
In pharmacological studies using preclinical models of cerebral ischemia, systemic or central administration of TAT-CN21 modulates CaMKII-dependent signaling pathways; the treatment reduces neuronal loss and maintains cognitive or motor functions in stroke models [1].
Chemical Properties
Molecular Weight3989.65
FormulaC169H303N69O43
Smiles[H]N[C@@H](CC1=CC=C(C=C1)O)C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N2CCC[C@H]2C(N3CCC[C@H]3C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@]([H])(C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@]([H])(C(N[C@H](C(N[C@@H](CC(O)=O)C(N[C@@H](CC(O)=O)C(N[C@H](C(O)=O)CCCNC(N)=N)=O)=O)=O)CCC(O)=O)=O)[C@@H](C)CC)=O)C(C)C)=O)C(C)C)=O)CCCNC(N)=N)=O)CCCCN)=O)CO)=O)CCCNC(N)=N)=O)=O)[C@@H](C)CC)=O)CCC(N)=O)=O)=O)CC(C)C)=O)CCCCN)=O)=O)=O)CCCNC(N)=N)=O)CCCCN)=O)CCCNC(N)=N)=O)CCCNC(N)=N)=O)CCCNC(N)=N)=O)CCC(N)=O)=O)CCCNC(N)=N)=O)CCCNC(N)=N)=O)CCCCN)=O)CCCCN)=O)CCCNC(N)=N)=O)=O
SequenceTyr-Gly-Arg-Lys-Lys-Arg-Arg-Gln-Arg-Arg-Arg-Lys-Arg-Pro-Pro-Lys-Leu-Gly-Gln-Ile-Gly-Arg-Ser-Lys-Arg-Val-Val-Ile-Glu-Asp-Asp-Arg
Sequence ShortYGRKKRRQRRRKRPPKLGQIGRSKRVVIEDDR
Storage & Solubility Information
Storagekeep away from moisture | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature.
Solubility Information
H2O: 40 mg/mL (10.03 mM), Sonication is recommended.
Solution Preparation Table
H2O
1mg5mg10mg50mg
1 mM0.2506 mL1.2532 mL2.5065 mL12.5324 mL
5 mM0.0501 mL0.2506 mL0.5013 mL2.5065 mL
10 mM0.0251 mL0.1253 mL0.2506 mL1.2532 mL

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In Vivo Formulation Calculator (Clear solution)

Please enter your animal experiment information in the following box and click Calculate to obtain the stock solution preparation method and in vivo formula preparation method:
TargetMol | Animal experiments For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, TargetMol | Animal experiments and a total of 10 animals are to be administered, using a formulation of TargetMol | reagent 10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH2O , the resulting working solution concentration would be 2 mg/mL.
Stock Solution Preparation:

Dissolve 2 mg of the compound in 100 μL DMSOTargetMol | reagent to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.

Preparation of the In Vivo Formulation:

1) Add 100 μL of the DMSOTargetMol | reagent stock solution to 400 μL PEG300TargetMol | reagent and mix thoroughly until the solution becomes clear.

2) Add 50 μL Tween 80 and mix well until fully clarified.

3) Add 450 μL Saline,PBS or ddH2OTargetMol | reagent and mix thoroughly until a homogeneous solution is obtained.

This example is provided solely to demonstrate the use of the In Vivo Formulation Calculator and does not constitute a recommended formulation for any specific compound. Please select an appropriate dissolution and formulation strategy based on your experimental model and route of administration.
All co-solvents required for this protocol, includingDMSO, PEG300/PEG400, Tween 80, SBE-β-CD, and Corn oil, are available for purchase on the TargetMol website.
1 Enter information below:
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2 Enter the in vivo formulation:
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Please see Inhibitor Handling Instructions for more frequently ask questions. Topics include: how to prepare stock solutions, how to store products, and cautions on cell-based assays & animal experiments, etc
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