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CAS#: 1206799-15-6 (free base); 1206801-37-7 (HCl)

Description: Merestinib, also known as LY2801653, is a n orally available, small molecule inhibitor of the proto-oncogene c-Met (mesenchymal-epithelial transition, also known as hepatocyte growth factor receptor [HGFR]) with potential antineoplastic activity. c-Met inhibitor LY2801653 selectively binds to c-Met, thereby inhibiting c-Met phosphorylation and disrupting c-Met signal transduction pathways. This may induce cell death in tumor cells overexpressing c-Met protein or expressing constitutively activated c-Met protein. This agent has potent anti-tumor efficacy in mono- and combination therapy in a broad range of cancers.

Synonym: LY-2801653; LY 2801653; LY2801653; Merestinib

IUPAC/Chemical Name: N-(3-fluoro-4-((1-methyl-6-(1H-pyrazol-4-yl)-1H-indazol-5-yl)oxy)phenyl)-1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide


MedKoo Cat#: 205526
Name: Merestinib (LY2801653)
CAS#: 1206799-15-6 (free base); 1206801-37-7 (HCl)
Chemical Formula: C30H22F2N6O3
Exact Mass: 552.17215
Molecular Weight: 552.53
Elemental Analysis: C, 65.21; H, 4.01; F, 6.88; N, 15.21; O, 8.69


White to off-white solid powder
>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:
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:
>2 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).


LY2801653 was identified and developed as a novel, potent, and orally active small molecule inhibitor of human c-Met. It demonstrated dose dependent inhibition of c-Met phosphorylation in xenograft tumors with a long lasting PD effect.  LY2801653 displayed potent anti-tumor efficacy in a number of non small cell lung, renal, pancreatic, and breast tumor models. Examination of c-Met expression in these tumors by immunohistochemistry (IHC) revealed a good correlation between response and c-Met expression in the tumor tissue.  LY2801653 treatment led to increase in functional vessel areas, and decrease in tumor hypoxia. Enhanced anti-tumor efficacy was achieved when Erlotinib was combined with LY2801653. . (source:



1: Yan SB, Peek VL, Ajamie R, Buchanan SG, Graff JR, Heidler SA, Hui YH, Huss KL, Konicek BW, Manro JR, Shih C, Stewart JA, Stewart TR, Stout SL, Uhlik MT, Um SL,  Wang Y, Wu W, Yan L, Yang WJ, Zhong B, Walgren RA. LY2801653 is an orally bioavailable multi-kinase inhibitor with potent activity against MET, MST1R, and  other oncoproteins, and displays anti-tumor activities in mouse xenograft models. Invest New Drugs. 2012 Dec 29. [Epub ahead of print] PubMed PMID: 23275061.

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