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SID 26681509 is a selective, reversible and competitive human cathepsin L inhibitor (IC50 of 56 nM).

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $60 | In Stock | In Stock | |
| 5 mg | $147 | In Stock | In Stock | |
| 10 mg | $228 | In Stock | In Stock | |
| 25 mg | $459 | In Stock | In Stock | |
| 50 mg | $687 | In Stock | In Stock | |
| 100 mg | $979 | In Stock | In Stock | |
| 1 mL x 10 mM (in DMSO) | $175 | In Stock | In Stock |
| Description | SID 26681509 is a selective, reversible and competitive human cathepsin L inhibitor (IC50 of 56 nM). |
| Targets&IC50 | Leishmania major:12.5 μM , Cathepsin L (human):56 nM , P. falciparum:15.4 μM |
| In vitro | After a 4-hour preincubation with cathepsin L, SID 26681509 becomes more potent (IC50: 1.0 nM). SID 26681509 acts as a slow-binding, slowly reversible competitive inhibitor with inhibition rate constants kon = 24,000 M^-1s^-1 and koff = 2.2 × 10^-5 s^-1 (Ki = 0.89 nM), as determined through transient kinetic analysis for single-step reversibility. Molecular docking studies, using the X-ray crystal structure of papain/CLIK-148[1], show that SID 26681509 inhibits papain and cathepsins B, K, S, and V with IC50 values ranging from 618 nM to 8.442 μM after one hour[1]. |
| In vivo | survival in murine models of sepsis significantly improved SID 26681509 by and reduces liver damage following warm liver ischemia/reperfusion (I/R) models[2]. |
| Molecular Weight | 539.65 |
| Formula | C27H33N5O5S |
| Cas No. | 958772-66-2 |
| Smiles | CCc1ccccc1NC(=O)CSC(=O)NNC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)OC(C)(C)C |
| Relative Density. | 1.298 g/cm3 (Predicted) |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||||||||||||
| Solubility Information | DMSO: 55 mg/mL (101.92 mM), Sonication is recommended. | |||||||||||||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+40% PEG300+5% Tween 80+45% Saline: 1 mg/mL (1.85 mM), Sonication is recommended. Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions. | |||||||||||||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||||||||||||
DMSO
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Dissolve 2 mg of the compound in 100 μL DMSO
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.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
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 ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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