Ro 61-8048

Catalog No.S8172

For research use only.

Ro 61-8048 is a high-affinity kynurenine 3-hydroxylase (KMO) inhibitor with IC50 and Ki of 37 nM and 4.8 nM, respectively.

Ro 61-8048 Chemical Structure

CAS No. 199666-03-0

Selleck's Ro 61-8048 has been cited by 3 Publications

Purity & Quality Control

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Biological Activity

Description Ro 61-8048 is a high-affinity kynurenine 3-hydroxylase (KMO) inhibitor with IC50 and Ki of 37 nM and 4.8 nM, respectively.
KMO [1]
(Cell-free assay)
KMO [1]
(Cell-free assay)
4.8 nM(Ki) 37 nM
In vivo In gerbils and rats, Ro 61-8048 (30 mg/kg, p.o.) causes kynurenine 3-hydroxylase inhibition. [1] In models of focal or global brain ischemia, Ro 61-8048 (40 mg/kg, p.o.) reduce ischemic brain damage. [2] In a hamster model of paroxysmal dyskinesia, Ro 61-8048 (150 mg/kg i.p.) significantly reduces the severity of dystonia without leading to marked central side effects. [3] addition, prenatal inhibition of the kynurenine pathway by Ro 61-8048 leads to structural changes in the hippocampus of adult rat offspring. [4]

Protocol (from reference)

Animal Research:


  • Animal Models: Male albino rats and female gerbils
  • Dosages: 30 μmol/kg
  • Administration: p.o.

Solubility (25°C)

In vitro

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+5% Tween 80+ddH2O
For best results, use promptly after mixing.


Chemical Information

Molecular Weight 421.45


CAS No. 199666-03-0
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles COC1=C(C=C(C=C1)S(=O)(=O)NC2=NC(=CS2)C3=CC(=CC=C3)[N+](=O)[O-])OC

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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