1. Immunology/Inflammation
  2. Toll-like Receptor (TLR)

CU CPT 22 

Cat. No.: HY-108471 Purity: >99.0%
Handling Instructions

CU CPT 22 is a toll-like receptor 1 and 2 (TLR1/2) inhibitor with an IC50 of 0.58 µM.

For research use only. We do not sell to patients.
CU CPT 22 Chemical Structure

CU CPT 22 Chemical Structure

CAS No. : 1416324-85-0

Size Price Stock Quantity
Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 209 In-stock
5 mg USD 190 In-stock
10 mg USD 340 In-stock
25 mg USD 770 In-stock
50 mg   Get quote  
100 mg   Get quote  

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  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


CU CPT 22 is a toll-like receptor 1 and 2 (TLR1/2) inhibitor with an IC50 of 0.58 µM.

IC50 & Target

IC50: 0.58 μM (TLR1/2)[1]

In Vitro

CU CPT 22 is a toll-like receptor 1 and 2 (TLR1/2) inhibitor with an IC50 of 0.58±0.09 µM. It is demonstrated that CU CPT 22 is able to compete with Pam3CSK4 for binding to TLR1/2 with an inhibition constant (Ki) of 0.41±0.07 µM, which is consistent with its potency observed in the whole cell assay. Increasing the concentration of CU CPT 22 to 6 µM decreases the anisotropy to background levels. It is found that CU CPT 22 inhibits TLR1/2 signaling without affecting other TLRs, showing it is highly selective in intact cells. CU CPT 22 is found to have no significant cytotoxicity at various concentrations up to 100 µM in RAW 264.7 cells. The result demonstrates that CU CPT 22 can inhibit about 60% of TNF-αand 95% of IL-1β at 8 µM[1].

Preparing Stock Solutions
Concentration Volume Mass 1 mg 5 mg 10 mg
1 mM 2.7596 mL 13.7981 mL 27.5961 mL
5 mM 0.5519 mL 2.7596 mL 5.5192 mL
10 mM 0.2760 mL 1.3798 mL 2.7596 mL
Please refer to the solubility information to select the appropriate solvent.
Kinase Assay

RAW 264.7 cells are planted in 6-well plates at 1,000,000 cells per well with 3 mL of medium and grown for 24 h at 37°C in a 5% CO2 humidified incubator. After 24 h, non-adherent cells and media are removed and replaced with fresh RPMI 1640 medium (3 mL/well). Two wells of adherent macrophages are treated with Pam3CSK4 (300 ng/mL) as the positive control, two wells are treated with 8 μM CU CPT 22, and the other two wells are treated with 8 μM compound DMSO. Plates are then incubated for an additional 24 h. The medium is removed, the cells are washed with PBS (3×1 mL), the plate is put on ice, then 500 μL of lysis buffer is added to each well. The production of the cytokine interleukin-1β (IL-1β) and TNF-α is quantified with enzyme-linked immunosorbent assays (ELISA). The cytokine level in each sample is determined in duplicate[1]. 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.

Purity: >99.0%

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