We collect cookies for vital website function and to better serve our customers. By continuing to browse you agree to the storing of cookies on your device. See our privacy policy for details.

W146 (trifluoroacetate salt)

Item № 10009109
CAS № 909725-62-8
Purity ≥95%
product image
                (CAS 909725-62-8)
     500 µg $63.00 0.00
     1 mg $120.00 0.00
     5 mg $504.00 0.00
     10 mg $882.00 0.00

Pricing updated 2019-07-17. Prices are subject to change without notice.


Sphingosine-1-phosphate (S1P) is a bioactive lipid that exhibits a broad spectrum of biological activities including cell proliferation, survival, migration, cytoskeletal organization, and morphogenesis.1,2,3 It exerts its activity by binding to five distinct G protein-coupled receptors, S1P1/EDG-1, S1P2/EDG-5, S1P3/EDG-3, S1P4/EDG-6, and S1P5/EDG-8.1,2 W146 is a S1P1 receptor antagonist that exhibits a Ki value of 77 nM for the human receptor in a GTP-γS binding assay with equipotency at the murine S1P1 receptor (2a = W146; 2b = W140 in supplemental material).4 No agonist or antagonist activity was observed at 10 µM W146 at S1P2, S1P3, or S1P5 receptors. W146 is active in vivo causing skin capillary leakage in murine lung and skin as well as inhibition of S1P1 agonist-induced lymphocyte sequestration. The half-life of W146 in rat blood is 73 minutes.

Recommended Products

Related Products
View Related Product Categories
Technical Information
Formal Name
[3R-amino-4-[(3-hexylphenyl)amino]-4-oxobutyl]-phosphonic acid, mono(trifluoroacetate)
CAS Number
Molecular Formula
Formula Weight
A crystalline solid
205, 245 nm
InChI Code
InChI Key

Warning - this product is not for human or veterinary use.

Shipping & Storage
Room temperature in continental US; may vary elsewhere
≥ 2 years
Downloads & Resources
Product Downloads

Download Product Insert

Download Safety Data Sheet (SDS)

Download free InChI Key generation software

Additional Information

View the Cayman Structure Database for chemical structure definitions for many Cayman products

Get Batch-Specific Data and Documents by Batch Number

Provide batch numbers separated by commas to download or request available product inserts, QC sheets, certificates of analysis, data pack, and GC-MS data.

References & Product Citations
Product Description References

1. Takuwa, Y., Takuwa, N., and Sugimoto, N. The Edg family G protein-coupled receptors for lysophospholipids: Their signaling properties and biological activities J. Biochem. 131(6), 767-771 (2002).

2. Ishii, I., Fukushima, N., Ye, X., et al. Lysophospholipid receptors: Signaling and biology Annu. Rev. Biochem. 73, 321-354 (2004).

3. Kluk, M.J., and Hla, T. Signaling of sphingosine-1-phosphate via the S1P/EDG-family of G-protein-coupled receptors Biochim. Biophys. Acta 1582(1-3), 72-80 (2002).

4. Sanna, M.G., Wang, S.K., Gonzalez-Cabrera, P.J., et al. Enhancement of capillary leakage and restoration of lymphocyte egress by a chiral S1P1 antagonist in vivo Nature Chemical Biology 2(8), 434-441 (2006).

Technical Support
Contact Us
  • Toll Free Phone (USA and Canada Only): (888) 526-5351
  • Direct Phone: (734) 975-3888
Cayman Contract Services

We work with scientists to accelerate their research, drug discovery, and drug development needs through our expertise in the following areas:

Cayman Chemical

1180 East Ellsworth Road

Ann Arbor, Michigan 48108 USA

Toll Free: (800) 364-9897

(USA and Canada Only)

Fax: (734) 971-3640