SML2158

VX-680

≥98% (HPLC)

• Synonym(s): MK 0457, MK-0457, MK0457, N-[4-[[4-(4-Methyl-1-piperazinyl)-6-[(5-methyl-1H-pyrazol-3-yl)amino]-2-pyrimidinyl]thio]phenyl]cyclopropanecarboxamide, Tozasertib, VX 680, VX680
• Empirical Formula (Hill Notation): C₂₃H₂₈N₈OS
• CAS Number: 639089-54-6
• Molecular Weight: 464.59
• UNSPSC Code: 12352200
• NACRES: NA.77
• MDL number: MFCD13185152
• Assay: ≥98% (HPLC)
• Form: powder

Properties

• assay: ≥98% (HPLC)
• form: powder
• color: white to beige
• solubility: DMSO: 2 mg/mL, clear
• storage temp.: 2-8°C
• SMILES string: O=C(C1CC1)NC(C=C2)=CC=C2SC3=NC(N4CCN(C)CC4)=CC(NC5=NNC(C)=C5)=N3
• InChI: 1S/C23H28N8OS/c1-15-13-20(29-28-15)25-19-14-21(31-11-9-30(2)10-12-31)27-23(26-19)33-18-7-5-17(6-8-18)24-22(32)16-3-4-16/h5-8,13-14,16H,3-4,9-12H2,1-2H3,(H,24,32)(H2,25,26,27,28,29)
• InChI key: GCIKSSRWRFVXBI-UHFFFAOYSA-N

Description

Biochem/physiol Actions

ATP site-targeting potent aurora kinase and Abl inhibitor with in vitro and in vivo anticancer efficacy.

VX-680 is an ATP site-targeting potent aurora kinase inhibitor (Aurara A/B/C Ki(app) = 0.6/18/4.6 nM) that affects FLT3, BCR-Abl, BCR-Abl (T315I), Lck, ITK, Src, and Fyn only at higher concentrations (Ki(app) = 30, 30, 42, 80, 220, 350, 520 nM, respectively) and exhibits little inhibitory potency toward 52 other kinases (Ki(app) >1 μM). VX-680 exhibits potent antiproliferation activity in a wide variety of cancer cultures (IC50 from 15 to 113 nM) as a result of cell cycle arrest and apoptosis induction, as well as causes tumor retardation (by 98% on day 13; 75 mg/kg b.i.d i.p.; HL-60 in mice) and regression (2 mg/kg/h 3 d/wk i.v. infusion; HCT116 in rats) in vivo. Crystallography data reveal a tight association of VX-680 with a hydrophobic pocket present only in a closed, inactive kinase conformation, which forms the basis of its selectivity profile, including its activity toward wild-type and the Imatinib-resistant (T315I) Abl.

Safety Information

• Storage Class: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable