CFI-402257, MPS1/TTK inhibitor

Catalog No. size PriceQuantity
M6548-2 2mg solid $390
M6548-10 10mg solid $1,560


CFI-402257 is an orally bioavailable inhibitor of monopolar spindle 1 (MPS1/TTK) kinase (IC50 = 1.7 nM). CFI-402257 is selective for MPS1/TTK over a panel of 262 kinases at a concentration of 1 μM. CFI-402257 increases aneuploidy in HCT116 cells when used at concentrations greater than 100 nM. It inhibits cell growth in a panel of breast, ovarian, prostate, pancreatic, lung, and colon cancer cell lines (GI50s = 0.001-1.3 μM). CFI-402257 (6.5 mg/kg) reduces tumor growth in HCT116 and HT29 mouse xenograft models as well as platinum-resistant and -sensitive high-grade serous ovarian cancer patient-derived xenograft (PDX) mouse models. It also inhibits the cytochrome P450 (CYP) isoforms CYP2C9 and CYP2C19 (IC50s = 13 and 8 μM, respectively) as well as CYP3A4 metabolism of 7-benzyloxy-4-trifluoromethylcoumarin (BFC) and dibenzylfluorescein (DBF; IC50s = 0.51 and 14 μM, respectively).

Product information

CAS Number: 1610759-22-2

Molecular Weight: 498.58

Formula: C28H30N6O3

Related CAS Number:

1610677-37-6 (HCl)

Chemical Name: Benzamide, N-cyclopropyl-4-[7-[[(cis-3-hydroxy-3-methylcyclobutyl)methyl]amino]-5-(3-pyridinyloxy)pyrazolo[1, 5-a]pyrimidin-3-yl]-2-methyl-

Smiles: CC1=CC(=CC=C1C(=O)NC1CC1)C1C=NN2C(=CC(=NC2=1)OC1=CN=CC=C1)NC[C@@H]1C[C@](C)(O)C1


InChi: InChI=1S/C28H30N6O3/c1-17-10-19(5-8-22(17)27(35)32-20-6-7-20)23-16-31-34-24(30-14-18-12-28(2,36)13-18)11-25(33-26(23)34)37-21-4-3-9-29-15-21/h3-5,8-11,15-16,18,20,30,36H,6-7,12-14H2,1-2H3,(H,32,35)/t18-,28+

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: Soluble in DMSO, not in water

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:

CFI-402257 is highly selective to TTK. CFI-402257 is tested against a panel of human kinases at 1 μM and inhibits none of the 262 kinases tested. CFI-402257 is a potent inhibitor of cell growth. CFI-402257 shows strong antineoplastic activity on a broad panel of human cancer-derived cell lines, and causes effects consistent with depletion or inhibition of Mps1. CFI-402257 inhibits Mps1 with an IC50 value of 1.2 nM, and is ATP competitive with a Ki value of 0.09 nM. CFI-402257 inhibits autophosphorylation of Mps1 at threonine 12/serine 15 with an EC50 value of 6.5 nM in cells exogenously expressing human Mps1. CFI-402257 exerts potent growth inhibitory activity across the vast majority of cell lines with a median IC50 value of 15 nM. In vivo: The upper dose level for once-daily administration of CFI-402257 is between 6 and 6.5 mg/kg. CFI-402257 given orally QD shows dose-dependent activity in mice with established tumors from xenografted MDA-MB-231 human TNBC cells [5 mg/kg CFI-402257, tumor growth inhibition (TGI)=74%; 6 mg/kg, TGI=89%], from xenografted MDA-MB-468 human TNBC cells in mice (5 mg/kg, TGI=75%; 6 mg/kg, TGI=94%). CFI-402257 also demonstrates antitumor activity in a platinum-resistant PDX model of high-grade serous ovarian cancer (6.5 mg/kg, TGI=61%). CFI-402257 is found to be similarly efficacious in a platinum-sensitive PDX model of high-grade serous ovarian cancer.


  1. Functional characterization of CFI-402257, a potent and selective Mps1/TTK kinase inhibitor, for the treatment of cancer. Mason JM, et al. Proc Natl Acad Sci U S A. 2017 Mar 21;114(12):3127-3132. PMID: 28270606.
  2. Discovery of Pyrazolo[1, 5-a]pyrimidine TTK Inhibitors: CFI-402257 is a Potent, Selective, Bioavailable Anticancer Agent. Liu Y, et al. ACS Med Chem Lett. 2016 May 6;7(7):671-5. PMID: 27437075.

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

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