We are open as normal during COVID-19 pandemic. Order online, same day shipping out from North Carolina, USA

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 406269

CAS#: 1240390-27-5

Description: GSK143 is a potent and highly selective SYK inhibitor showing good efficacy in the rat Arthus model. The Syk inhibitor GSK143 reduces macrophage activation and mast cell degranulation in vitro. In addition, it inhibits manipulation-induced intestinal muscular inflammation and restores intestinal transit in mice.

Price and Availability

Size Price Shipping out time Quantity
Inquire bulk and customized quantity

Pricing updated 2020-08-07. Prices are subject to change without notice.

GSK143 is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 406269
Name: GSK143
CAS#: 1240390-27-5
Chemical Formula: C17H22N6O2
Exact Mass: 342.18042
Molecular Weight: 342.39558
Elemental Analysis: C, 59.63; H, 6.48; N, 24.54; O, 9.35

Synonym: GSK143; GSK 143; GSK-143.

IUPAC/Chemical Name: 2-(((3R,4R)-3-aminotetrahydro-2H-pyran-4-yl)amino)-4-(p-tolylamino)pyrimidine-5-carboxamide


InChi Code: InChI=1S/C17H22N6O2/c1-10-2-4-11(5-3-10)21-16-12(15(19)24)8-20-17(23-16)22-14-6-7-25-9-13(14)18/h2-5,8,13-14H,6-7,9,18H2,1H3,(H2,19,24)(H2,20,21,22,23)/t13-,14+/m0/s1

SMILES Code: O=C(C1=CN=C(N[C@H]2[C@@H](N)COCC2)N=C1NC3=CC=C(C)C=C3)N

Technical Data

Solid powder


Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>5 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Additional Information



1: van Bree SH, Gomez-Pinilla PJ, van de Bovenkamp FS, Di Giovangiulio M, Farro G, Nemethova A, Cailotto C, de Jonge WJ, Lee K, Ramirez-Molina C, Lugo D, Skynner MJ, Boeckxstaens GE, Matteoli G. Inhibition of spleen tyrosine kinase as treatment of postoperative ileus. Gut. 2012 Dec 13. [Epub ahead of print] PubMed PMID: 23242119.

2: Liddle J, Atkinson FL, Barker MD, Carter PS, Curtis NR, Davis RP, Douault C, Dickson MC, Elwes D, Garton NS, Gray M, Hayhow TG, Hobbs CI, Jones E, Leach S, Leavens K, Lewis HD, McCleary S, Neu M, Patel VK, Preston AG, Ramirez-Molina C, Shipley TJ, Skone PA, Smithers N, Somers DO, Walker AL, Watson RJ, Weingarten GG. Discovery of GSK143, a highly potent, selective and orally efficacious spleen tyrosine kinase inhibitor. Bioorg Med Chem Lett. 2011 Oct 15;21(20):6188-94. doi: 10.1016/j.bmcl.2011.07.082. Epub 2011 Aug 12. PubMed PMID: 21903390.