1: Son MK, Ryu YL, Jung KH, Lee H, Lee HS, Yan HH, Park HJ, Ryu JK, Suh JK, Hong S, Hong SS. HS-173, a novel PI3K inhibitor, attenuates the activation of hepatic stellate cells in liver fibrosis. Sci Rep. 2013 Dec 11;3:3470. doi: 10.1038/srep03470. PubMed PMID: 24326778; PubMed Central PMCID: PMC3858860.
2: Lee H, Kim SJ, Jung KH, Son MK, Yan HH, Hong S, Hong SS. A novel imidazopyridine PI3K inhibitor with anticancer activity in non-small cell lung cancer cells. Oncol Rep. 2013 Aug;30(2):863-9. doi: 10.3892/or.2013.2499. Epub 2013 May 27. PubMed PMID: 23708425.
3: Jung KH, Ryu YL, Lee HS, Lee H, Son MK, Yan HH, Hong SW, Ryu JK, Hong S, Suh JK, Hong SS. A novel PI3K inhibitor alleviates fibrotic responses in fibroblasts derived from Peyronie's plaques. Int J Oncol. 2013 Jun;42(6):2001-8. doi: 10.3892/ijo.2013.1905. Epub 2013 Apr 16. PubMed PMID: 23588860.
4: Yun SM, Jung KH, Lee H, Son MK, Seo JH, Yan HH, Park BH, Hong S, Hong SS. Synergistic anticancer activity of HS-173, a novel PI3K inhibitor in combination with Sorafenib against pancreatic cancer cells. Cancer Lett. 2013 May 1;331(2):250-61. doi: 10.1016/j.canlet.2013.01.007. Epub 2013 Jan 20. PubMed PMID: 23340175.
5: Lee H, Jung KH, Jeong Y, Hong S, Hong SS. HS-173, a novel phosphatidylinositol 3-kinase (PI3K) inhibitor, has anti-tumor activity through promoting apoptosis and inhibiting angiogenesis. Cancer Lett. 2013 Jan 1;328(1):152-9. doi: 10.1016/j.canlet.2012.08.020. Epub 2012 Aug 26. PubMed PMID: 22929971.

Chemical
CAS Num	1276110-06-5
Chemical Formula	C21H18N4O4S
Molecular Weight	422.46
IUPAC Chemical Name	ethyl 6-(5-(phenylsulfonamido)pyridin-3-yl)imidazo[1,2-a]pyridine-3-carboxylate
Exact Mass	422.10488
Elemental Analysis	C, 59.70; H, 4.29; N, 13.26; O, 15.15; S, 7.59
Synonym	HS173; HS 173; HS-173.
Solubility	soluble in DMSO, not soluble in water.
SMILES Code	O=C(C1=CN=C2C=CC(C3=CC(NS(=O)(C4=CC=CC=C4)=O)=CN=C3)=CN21)OCC
Biological
Targets and Effects	HIF pathway inhibitor
Pathways	Apoptosis
Physical
Appearance	white to off-white solid powder
Purity	>98% (or refer to the Certificate of Analysis)
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	0 – 4 C for short term (weeks to 1 month) or -20 C for long terms (months to years).
Shelf Life	>2 years if stored properly.