BOS172722 | CAS#1578245-44-9 | MPS1 inhibitor

MedKoo Cat#: 206988 | Name: BOS172722

Description:

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

BOS172722 is a potent and selective MPS1 inhibitor with IC50 = 11 nM. BOS172722 showed very good bioavailability in all three species despite very modest solubility at physiological pH. Monopolar spindle 1 (MPS1) occupies a central role in mitosis and is one of the main components of the spindle assembly checkpoint. The MPS1 kinase is an attractive cancer target.

Chemical Structure

BOS172722

CAS#1578245-44-9

Theoretical Analysis

MedKoo Cat#: 206988

Name: BOS172722

CAS#: 1578245-44-9

Chemical Formula: C24H30N8O

Exact Mass: 446.2543

Molecular Weight: 446.56

Elemental Analysis: C, 64.55; H, 6.77; N, 25.09; O, 3.58

Price and Availability

Size	Price	Availability
25mg	USD 750.00	2 Weeks
50mg	USD 1,250.00	2 Weeks
100mg	USD 2,050.00	2 Weeks
200mg	USD 2,950.00	2 Weeks
500mg	USD 3,950.00	2 Weeks
1g	USD 5,950.00	2 Weeks
2g	USD 9,950.00	2 Weeks

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Related CAS #

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Synonym

BOS172722; BOS-172722; BOS 172722;

IUPAC/Chemical Name

N2-(2-ethoxy-4-(4-methyl-4H-1,2,4-triazol-3-yl)phenyl)-6-methyl-N8-neopentylpyrido[3,4-d]pyrimidine-2,8-diamine

InChi Key

SGWLRDAOCLITOM-UHFFFAOYSA-N

InChi Code

InChI=1S/C24H30N8O/c1-7-33-19-11-16(22-31-27-14-32(22)6)8-9-18(19)29-23-25-12-17-10-15(2)28-21(20(17)30-23)26-13-24(3,4)5/h8-12,14H,7,13H2,1-6H3,(H,26,28)(H,25,29,30)

SMILES Code

CC1=CC2=CN=C(NC3=CC=C(C4=NN=CN4C)C=C3OCC)N=C2C(NCC(C)(C)C)=N1

Appearance

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

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

Solubility

Soluble in DMSO

Shelf Life

>3 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

2934.99.9001

More Info

Product Data

Product Data

Instruction

View handling instruction

Biological target:

Inhibitor of monopolar spindle 1 (MPS1) checkpoint.

In vitro activity:

Optimizing HLM stability proved challenging since it was not possible to identify a consistent site of metabolism and lowering lipophilicity proved unsuccessful. Key to overcoming this problem was the finding that introduction of a methyl group at the 6-position of the pyrido[3,4- d]pyrimidine core significantly improved HLM stability. Met ID studies suggested that the methyl group suppressed metabolism at the distant aniline portion of the molecule, likely by blocking the preferred pharmacophore through which P450 recognized the compound. This work ultimately led to the discovery of BOS172722 as a Phase 1 clinical candidate. Reference: Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N2-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N8-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 27;61(18):8226-8240. doi: 10.1021/acs.jmedchem.8b00690. Epub 2018 Sep 10. PMID: 30199249; PMCID: PMC6166229.

In vivo activity:

In in vivo pharmacodynamic experiments, BOS172722 potently inhibits the spindle assembly checkpoint induced by paclitaxel in human tumor xenograft models of TNBC, as measured by inhibition of the phosphorylation of histone H3 and the phosphorylation of the MPS1 substrate, KNL1. This mechanistic synergy results in significant in vivo efficacy, with robust tumor regressions observed for the combination of BOS172722 and paclitaxel versus either agent alone in long-term efficacy studies in multiple human tumor xenograft TNBC models, including a patient-derived xenograft and a systemic metastasis model. The current target indication for BOS172722 is TNBC, based on their high sensitivity to MPS1 inhibition, the well-defined clinical patient population with high unmet need, and the synergy observed with paclitaxel. Reference: Anderhub SJ, Mak GW, Gurden MD, Faisal A, Drosopoulos K, Walsh K, Woodward HL, Innocenti P, Westwood IM, Naud S, Hayes A, Theofani E, Filosto S, Saville H, Burke R, van Montfort RLM, Raynaud FI, Blagg J, Hoelder S, Eccles SA, Linardopoulos S. High Proliferation Rate and a Compromised Spindle Assembly Checkpoint Confers Sensitivity to the MPS1 Inhibitor BOS172722 in Triple-Negative Breast Cancers. Mol Cancer Ther. 2019 Oct;18(10):1696-1707. doi: 10.1158/1535-7163.MCT-18-1203. PMID: 31575759.

	Solvent	mg/mL	mM
Solubility
	DMSO	5.0	11.19
	1M HCl	65.0	145.56

Note: There can be variations in solubility for the same chemical from different vendors or different batches from the same vendor. The following factors can affect the solubility of the same chemical: solvent used for crystallization, residual solvent content, polymorphism, salt versus free form, degree of hydration, solvent temperature. Please use the solubility data as a reference only. Warming and sonication will facilitate dissolving. Still have questions? Please contact our Technical Support scientists.

Preparing Stock Solutions

The following data is based on the product molecular weight 446.56 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Concentration / Solvent Volume / Mass	1 mg	5 mg	10 mg
1 mM	1.15 mL	5.76 mL	11.51 mL
5 mM	0.23 mL	1.15 mL	2.3 mL
10 mM	0.12 mL	0.58 mL	1.15 mL
50 mM	0.02 mL	0.12 mL	0.23 mL

Formulation protocol:

Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N2-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N8-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 27;61(18):8226-8240. doi: 10.1021/acs.jmedchem.8b00690. Epub 2018 Sep 10. PMID: 30199249; PMCID: PMC6166229.

In vitro protocol:

In vivo protocol:

Anderhub SJ, Mak GW, Gurden MD, Faisal A, Drosopoulos K, Walsh K, Woodward HL, Innocenti P, Westwood IM, Naud S, Hayes A, Theofani E, Filosto S, Saville H, Burke R, van Montfort RLM, Raynaud FI, Blagg J, Hoelder S, Eccles SA, Linardopoulos S. High Proliferation Rate and a Compromised Spindle Assembly Checkpoint Confers Sensitivity to the MPS1 Inhibitor BOS172722 in Triple-Negative Breast Cancers. Mol Cancer Ther. 2019 Oct;18(10):1696-1707. doi: 10.1158/1535-7163.MCT-18-1203. PMID: 31575759.

1: Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N(2)-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N(8)-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 10. doi: 10.1021/acs.jmedchem.8b00690. [Epub ahead of print] PubMed PMID: 30199249.