Catalog Number: 2732
Alternate Names: Ramatroban
Chemical Name: (3R)-3-[[(4-Fluorophenyl)sulfonyl]amino]-1,2,3,4-tetrahydro-9H-carbazole-9-propanoic acid
Biological Activity
Potent dual antagonist of TP/DP2 (CRTH2) prostanoid receptors (Ki values are 4.3, 4.5 and > 10000 nM for hDP2, hTP and hDP1 receptors respectively). Suppresses PGD2-induced migration of human eosinophils (IC50 = 170 nM).
Technical Data
  • M.Wt:
  • Formula:
  • Solubility:
    Soluble to 100 mM in DMSO and to 100 mM in ethanol
  • Purity:
  • Storage:
    Desiccate at -20°C
  • CAS No:
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Background References
  1. Interactions among three classes of mediators explain antigen-induced bronchoconstriction in the isolated perfused and ventilated guinea pig lung.
    Sundstrom et al.
    J.Pharmacol.Exp.Ther., 2003;307:408
  2. Ramatroban (BAY u3405): a novel dual antagonist of TXA2 receptor and CRTh2, a newly identified prostaglandin D2 receptor.
    Ishizuka et al.
    Cardiovasc.Drug Rev., 2004;22:71
  3. Minor structural modifications convert the dual TP/CRTH2 antagonist ramatroban into a highly selective and potent CRTH2 antagonist.
    Ulven and Kostenis
    J.Med.Chem., 2005;48:897
Tocris Bioscience is the leading supplier of novel and exclusive tools for life science research with over 30 years' experience in the industry. Tocris is a Bio-Techne brand.

Order Details


Contact Information

Molarity Calculator
Calculate the mass, volume or concentration required for a solution

The molarity calculator is based on the following equation:

Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol)
An example of a molarity calculation using the molarity calculator:
What is the mass of compound required to make a 10 mM stock solution in 10 ml of water given that the molecular weight of the compound is 197.13 g/mol?

R&D Systems Guarantee

or select another batch:


Customer Information