1. Metabolic Enzyme/Protease
  2. Aldose Reductase
  3. Tolrestat

Tolrestat  (Synonyms: AY-27773)

Cat. No.: HY-16500 Purity: 99.37%
COA Handling Instructions

Tolrestat is a potent, orally active aldose reductase inhibitor with IC50 of 35 nM.

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

Tolrestat Chemical Structure

Tolrestat Chemical Structure

CAS No. : 82964-04-3

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Free Sample (0.1 - 0.5 mg)   Apply Now  
10 mM * 1 mL in DMSO USD 127 In-stock
Solid + Solvent
10 mM * 1 mL
ready for reconstitution
USD 127 In-stock
5 mg USD 115 In-stock
10 mg USD 190 In-stock
50 mg USD 660 In-stock
100 mg USD 1050 In-stock
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This product is a controlled substance and not for sale in your territory.

Top Publications Citing Use of Products
  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review


Tolrestat is a potent, orally active aldose reductase inhibitor with IC50 of 35 nM.

IC50 & Target

IC50: 35 nM (Aldose Reductase)

In Vivo

Tolrestat (1.8 mg/kg per day) causes a reversal to normal RBC sorbitol levels diabetic rats[1]. In 21-day diabetic rats, the estimated ID in the sciatic nerve and lenses is 4.8 and about 20 for tolrestat, and 1.7 and 2.2 for (±)sorbinil, respectively[2]. Either tolrestat or sorbinil inhibits tissue AR activity but does not significantly affect plasma lipoprotein levels, or affect the body weight of the mice or their general health. Accumulation of cholesterol-rich foam cells is significantly increased in aortic roots of tolrestat-fed mice[3].

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

Molecular Weight









Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (139.92 mM; Need ultrasonic)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.7984 mL 13.9919 mL 27.9838 mL
5 mM 0.5597 mL 2.7984 mL 5.5968 mL
10 mM 0.2798 mL 1.3992 mL 2.7984 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

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

    Solubility: ≥ 2.5 mg/mL (7.00 mM); Clear solution

  • 2.

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

    Solubility: ≥ 2.5 mg/mL (7.00 mM); Clear solution

  • 3.

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

    Solubility: ≥ 2.5 mg/mL (7.00 mM); Clear solution

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

Purity: 99.37%

Animal Administration

For a period of four days, rats weighing about 70 g are given unlimited access to water and Chow supplemented with 20% (wt/wt) galactose and tolrestat at various dose levels. Rats used as control receive chow containing galactose (20%, wt/wt) or glucose (20%, wt/wt). The rats are killed; the lenses and sciatic nerves are removed and homogenized in 5% trichloroacetic acid; the deproteinized extracts are then analyzed for galactitol by a modification of a method for glycerol determination. The values obtained in the group fed 20% glucose are used for background correction.

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

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Tolrestat 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.

  • Molarity Calculator

  • Dilution Calculator

The molarity calculator equation

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

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The dilution calculator equation

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

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