2. Cell Cycle/DNA Damage Cytoskeleton Apoptosis
  3. Kinesin Apoptosis
  4. S-Trityl-L-cysteine

S-Trityl-L-cysteine  (Synonyms: NSC 83265; S-Tritylcysteine; 3-Tritylthio-L-alanine)

Cat. No.: HY-W011102 Purity: 98.83%
COA Handling Instructions

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S-Trityl-L-cysteine (NSC 83265) is a selective and allosteric kinesin Eg5 inhibitor with an IC50 of 1 μM for the inhibition of basal ATPase activity and 140 nM for the microtubule-activated ATPase activity. S-Trityl-L-cysteine has antitumor activities.

For research use only. We do not sell to patients.

S-Trityl-L-cysteine Chemical Structure

S-Trityl-L-cysteine Chemical Structure

CAS No. : 2799-07-7

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10 mM * 1 mL in DMSO
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Based on 1 publication(s) in Google Scholar

S-Trityl-L-cysteine Related Antibodies

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  • Purity & Documentation

  • References

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Description

S-Trityl-L-cysteine (NSC 83265) is a selective and allosteric kinesin Eg5 inhibitor with an IC50 of 1 μM for the inhibition of basal ATPase activity and 140 nM for the microtubule-activated ATPase activity. S-Trityl-L-cysteine has antitumor activities[1][2].

IC50 & Target[1]

Eg5

 

In Vitro

S-Trityl-L-cysteine binds to a unique pocket in the Eg5 motor domain formed by secondary structural elements (helix a2/loop L5/helix a3)[1].
S-Trityl-L-cysteine (1-20 µM; for 72 h) could mediate cell apoptosis, as well as cell cycle arrest, in a dose-dependent manner. S-Trityl-L-cysteine-mediated apoptosis and cell cycle arrest were triggered by activation of the mitogen-activated protein kinase and nuclear factor kB signaling pathways[1].
S-Trityl-L-cysteine induces mitotic arrest in HeLa cells (IC50 of 700 nM) with characteristic monoastral spindles[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

S-Trityl-L-cysteine Related Antibodies
Molecular Weight

363.47

Formula

C22H21NO2S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

N[C@@H](CSC(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3)C(O)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 25 mg/mL (68.78 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.7513 mL 13.7563 mL 27.5126 mL
5 mM 0.5503 mL 2.7513 mL 5.5025 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 1 mg/mL (2.75 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 1 mg/mL (2.75 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 98.99%

COA (255 KB) HNMR (123 KB) LCMS (107 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.7513 mL 13.7563 mL 27.5126 mL 68.7815 mL
5 mM 0.5503 mL 2.7513 mL 5.5025 mL 13.7563 mL
10 mM 0.2751 mL 1.3756 mL 2.7513 mL 6.8781 mL
15 mM 0.1834 mL 0.9171 mL 1.8342 mL 4.5854 mL
20 mM 0.1376 mL 0.6878 mL 1.3756 mL 3.4391 mL
25 mM 0.1101 mL 0.5503 mL 1.1005 mL 2.7513 mL
30 mM 0.0917 mL 0.4585 mL 0.9171 mL 2.2927 mL
40 mM 0.0688 mL 0.3439 mL 0.6878 mL 1.7195 mL
50 mM 0.0550 mL 0.2751 mL 0.5503 mL 1.3756 mL
60 mM 0.0459 mL 0.2293 mL 0.4585 mL 1.1464 mL
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S-Trityl-L-cysteine Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

S-Trityl-L-cysteine2799-07-7NSC 83265 S-Tritylcysteine 3-Tritylthio-L-alanineNSC83265NSC-83265KinesinApoptosiskinesin Eg5ATPase activityantitumor activitiescell cycle arrestInhibitorinhibitorinhibit

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