Catalog No. size PriceQuantity
M6717-2 2mg solid $108
M6717-10 10mg solid $447


AF-353 is a P2X3 receptor antagonist. Antagonism of the P2X3 receptor is one of the potential therapeutic strategies for the management of neuropathic pain because P2X3 receptors are predominantly localized on small to medium diameter C- and Aδ-fiber primary afferent neurons, which are related to the pain-sensing system.

Product information

CAS Number: 865305-30-2

Molecular Weight: 400.21

Formula: C14H17IN4O2


AF 353



Chemical Name: 5-(5-iodo-4-methoxy-2-propan-2-ylphenoxy)pyrimidine-2,4-diamine

Smiles: COC1=CC(C(C)C)=C(C=C1I)OC1=CN=C(N)N=C1N


InChi: InChI=1S/C14H17IN4O2/c1-7(2)8-4-11(20-3)9(15)5-10(8)21-12-6-18-14(17)19-13(12)16/h4-7H,1-3H3,(H4,16,17,18,19)

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: ≥12 months 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

How to use

In Vitro:

AF-353 (Ro-4) is a highly potent inhibitor of α, β-meATP-evoked intracellular calcium flux in cell lines expressing recombinant rat and human P2X3 and human P2X2/3 channels. AF-353 (Ro-4) also blocks human P2X2/3 channel function with marginally reduced potency with a p50 of 7.3.

In Vivo:

AF-353 (Ro-4) does not compromise oxygen levels or cardiac function. AF-353 (Ro-4) (10 mg/kg, 20 mg/kg; i.v.; for 4-6 hours) inhibits the purinergic response in both normal and spinal cord-injured (SCI) rats. AF-353 (Ro-4) (10 mg/kg, 20 mg/kg; i.v.; for 4-6 hours) also reduces the inter-contractile interval in normal but not in SCI rats; however, the frequency of non-voiding (NVC) in SCI rats is significantly reduced.


  1. Jung YH, Kim YO, Lin H, Cho JH, Park JH, Lee SD, Bae J, Kang KM, Kim YG, PaeAN, Ko H, Park CS, Yoon MH, Kim YC. Discovery of Potent Antiallodynic Agents for Neuropathic Pain Targeting P2X3 Receptors. ACS Chem Neurosci. 2017 Apr 6. doi:10.1021/acschemneuro.6b00401. [Epub ahead of print] PubMed PMID: 28323403.

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

Payment & Security

PayPal Venmo

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed