[CAS NO. 459420-09-8]  I3MT-3

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PRODUCTS SPECIFICATIONS [459420-09-8]

Catalog
HY-128206
Brand
MCE
CAS
459420-09-8

DESCRIPTION [459420-09-8]

Overview

MDL-
Molecular Weight310.37
Molecular FormulaC17H14N2O2S
SMILESO=C1NC(SCC(C2=C3C=CC=CC3=CC=C2)=O)=NC(C)=C1

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

1 Publications Citing Use of MCE


Summary

I3MT-3 (HMPSNE) is a potent, selective, and cell-membrane permeable inhibitor of 3-Mercaptopyruvate sulfurtransferase (3MST) ( IC 50 =2.7 μM). I3MT-3 is inactive for other H2S/sulfane sulfur-producing enzymes. I3MT-3 targets a persulfurated cysteine residue located in the active site of 3MST [1] .


IC50 & Target

IC50: 2.7 μM (3-Mercaptopyruvate sulfurtransferase (3MST)) [1]


In Vitro

I3MT-3 (1 μM) is selective for 3MST and shows a high inhibitory activity (80–90%) even at 10 μM in cell lysate of 3MST-overexpressing HEK293 cells. Besides, it is almost inactive towards the other two H2S-producing enzymes even at 100 μM [1] .
I3MT-3 (1 μM) shows a high selectivity for 3MST, it completely suppresses the 3MST activity in COS7 cells living cells [1] .
I3MT-3 produces a concentration-dependent inhibition of the AzMC (the fluorescent H2S probe) signal when incubated with purified human recombinant enzyme, the inhibition of the catalytic activity of 3-MST produces a concentration-dependent inhibition of H2S production with an IC 50 of 13.6 µM [1] .
I3MT-3 shows a dose-dependent inhibition of 3-MST activity from CT26 homogenates, which contain the murine form of the enzyme. The IC 50 of HMPSNE for murine 3-MST is calculated as 2.3 µM with a cozncentration-dependent decrease of AzMC fluorescence [1] .
I3MT-3 (10 µM-100 µM; after 3 h probe AzMC) causes a partial inhibition of the signal, while at 100 µM, HMPSNE causes a complete inhibition of the AzMC-guided H2S fluorescence at 100 µM, Additionally, HMPSNE is capable of inhibiting its target in situ in CT26 cells (with an IC 50 of approximately 30 µM) [2] .
I3MT-3 (0-300 μM; 5-50 hours) does not enhance MTT conversion at 10 µM, while at 100 and 300 µM it produces an inhibitory response, without increasing the LDH signal, i.e., without inducing any detectable degree of cell necrosis. It also produces a decreased oxygen consumption rate (OCR) profiles in CT26 cells [2] .
I3MT-3 (0-300 μM; 48 hours) inhibits CT26 cells proliferate with increasing concentrations of I3MT-3. Confluence of cells treated with HMPSNE is recorded each hour for 48 h by the IncuCyte method [2] .

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

Cell Proliferation Assay [2]

Cell Line: CT26 cells
Concentration: 0 μM; 10 μM; 30 μM; 100 μM; 300 μM
Incubation Time: 48 hours
Result: Slowed down proliferation of CT26 cells.

Appearance

Solid


Shipping

Room temperature in continental US; may vary elsewhere.


Storage

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

Solvent & Solubility

In Vitro:

DMSO : 125 mg/mL ( 402.75 mM ; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.2220 mL 16.1098 mL 32.2196 mL
5 mM 0.6444 mL 3.2220 mL 6.4439 mL
10 mM 0.3222 mL 1.6110 mL 3.2220 mL
* Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

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

    Solubility: 2.08 mg/mL (6.70 mM); Suspended solution; Need ultrasonic

  • 2.

    Add each solvent one by one: 10% DMSO >> 90% corn oil

    Solubility: ≥ 2.08 mg/mL (6.70 mM); Clear solution

* All of the co-solvents are available by MCE.