Catalog No. Size PriceQuantity
M8448-2 Solid 2 mg $95
M8448-10 Solid 10 mg $285


(S)-Willardiine is a potent agonist of AMPA/kainate receptors with EC50 of 44.8 uM.IC50 value: 44.8 uM(EC50) Target: AMPA/kainate receptor agonistin vitro: The (S)- but not (R)-isomers of willardiine and 5-bromowillardiine were potent agonists, producing rapidly but incompletely desensitizing responses . At a concentration of 1.8 mM, Ca2+ inhibited the currents induced by 100 microM willardiine by approximately 50% .in vivo: In newborn mice (P5, histopathology at P10), local injection of the AMPA receptor agonist S-bromo-willardiine at day 5 after birth induced cortical damage and white matter damage, which was reduced in a dose-dependent manner by the AMPA receptor antagonists .

Product information

CAS Number: 21416-43-3

Molecular Weight: 199.16

Formula: C7H9N3O4



Chemical Name: (2S)-2-amino-3-(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)propanoic acid

Smiles: N[C@@H](CN1C=CC(=O)NC1=O)C(O)=O


InChi: InChI=1S/C7H9N3O4/c8-4(6(12)13)3-10-2-1-5(11)9-7(10)14/h1-2,4H,3,8H2,(H,12,13)(H,9,11,14)/t4-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: Soluble in DMSO

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥360 days if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200


  1. Patneau DK, et al. Activation and desensitization of AMPA/kainate receptors by novel derivatives of willardiine. J Neurosci. 1992 Feb;12(2):595-606.
  2. Fukushima T, et al. Calcium inhibits willardiine-induced responses in kainate receptor GluR6(Q)/KA-2. Neuroreport. 2001 Jan 22;12(1):163-7.
  3. Gressens P, et al. The effects of AMPA receptor antagonists in models of stroke and neurodegeneration. Eur J Pharmacol. 2005 Sep 5;519(1-2):58-67.

Products are for research use only. Not for human use.

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