1. Neuronal Signaling
  2. CaMK

KN-93 phosphate 

Cat. No.: HY-15465B Purity: 99.91%
Data Sheet SDS Handling Instructions

KN-93 phosphate is a novel membrane-permeant synthetic inhibitor of purified neuronal CaMK-II, with Ki of 370 nM.

For research use only. We do not sell to patients.
KN-93 phosphate Chemical Structure

KN-93 phosphate Chemical Structure

CAS No. : 1913269-12-1

Size Price Stock Quantity
10 mM * 1 mL in DMSO $145 In-stock
1 mg $55 In-stock
5 mg $110 In-stock
10 mg $150 In-stock
50 mg $600 In-stock
100 mg   Get quote  
200 mg   Get quote  

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Other Forms of KN-93 phosphate:

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  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


KN-93 phosphate is a novel membrane-permeant synthetic inhibitor of purified neuronal CaMK-II, with Ki of 370 nM.

IC50 & Target

Ki: 370 nM (CaMK-II)

In Vitro

After 2 days of KN-93 treatment, 95% of cells are arrested in G1. G1 arrest is reversible; 1 day after KN-93 release, a peak of cells had progressed into S and G2-M. KN-93 also blocks cell growth stimulated by basic fibroblast growth factor, platelet-derived growth factor-BB, epidermal growth factor, and insulin-like growth factor-1 in NIH 3T3 fibroblasts[1]. KN-93 inhibits the H+, K+-ATPase activity but strongly dissipates the proton gradient formed in the gastric membrane vesicles and reduces the volume of luminal space[2]. KN-93 (0.5 μM) prevents increased LV developed pressure during action potential prolongation and early afterdepolarizations. Ca2+-independent CaM kinase activity is increased during early afterdepolarizations and this increase is prevented by KN-93[3].

Preparing Stock Solutions
Concentration Volume Mass 1 mg 5 mg 10 mg
1 mM 1.6694 mL 8.3468 mL 16.6937 mL
5 mM 0.3339 mL 1.6694 mL 3.3387 mL
10 mM 0.1669 mL 0.8347 mL 1.6694 mL
Please refer to the solubility information to select the appropriate solvent.
Kinase Assay

Cells are grown on 12-mm diameter glass coverslips in DMEM 100% serum and various concentrations of KN-93 or KN-92. After 0, 1, 2, and 3 days of culture in the presence of drug, coverslips are removed from culture, rinsed once in PBS, and then submerged in 100% methanol at -20°C for 3 min. Fixed cells are stored in PBS until staining using the TUNEL assay. Cells are overlaid on 20 μL PBS/1 mg/mL BSA for 30 min, rinsed in PBS, and then overlaid on 20 μL containing 100 mM sodium cacodylate (pH 6.8), 1 mM CoCl2, 0.1 mM DTT, 0.1 mg/mL BSA, 20 μM fluorescein-12-dUTP, and 0.1 unit/μL terminal transferase at 37°C for 60 min. Coverslips are rinsed in PBS twice, mounted on slides, and photographed using an OLYMPUS BX5O epifluorescent microscope using a UPLAN APO 40X oil immersion objective. MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight






Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month

Room temperature in continental US; may vary elsewhere

Solvent & Solubility


* "<1 mg/mL" means slightly soluble or insoluble. "≥" means soluble, but saturation unknown.

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