For research use only. Not for therapeutic Use.
SPI-112 is a potent, selective and competitive SHP2 (PTPN11) inhibitor with IC50s of 1 μM, 18.3 μM and 14.5 μM for SHP2, protein tyrosine phosphatase (PTP) and PTP1B, respectively[1][2].
SPI-112 has a polar -NO2 or a negatively charged -COOH group and has no detectable cellular activity, suggesting that SPI-112 is not cell permeable[1].
In surface plasmon resonance (SPR) binding assay, SPI-112 displays a 1:1 stoichiometric binding kinetics to SHP2 with a kinetic constant KD of 1.30 µM. Enzyme kinetic data obtained with SPI-112 are best fitted with the competitive inhibition model (Ki of 0.8 µM), suggesting that SPI-112 interacts with the catalytic site of SHP2[1].
| Catalog Number | I015599 |
| CAS Number | 1051387-90-6 |
| Synonyms | 3-[[5-[(4-fluorophenyl)methylsulfamoyl]-2-hydroxy-1H-indol-3-yl]diazenyl]benzoic acid |
| Molecular Formula | C22H17FN4O5S |
| Purity | ≥95% |
| InChI | InChI=1S/C22H17FN4O5S/c23-15-6-4-13(5-7-15)12-24-33(31,32)17-8-9-19-18(11-17)20(21(28)25-19)27-26-16-3-1-2-14(10-16)22(29)30/h1-11,24-25,28H,12H2,(H,29,30) |
| InChIKey | ZSXZSNNAEVDPNL-UHFFFAOYSA-N |
| SMILES | C1=CC(=CC(=C1)N=NC2=C(NC3=C2C=C(C=C3)S(=O)(=O)NCC4=CC=C(C=C4)F)O)C(=O)O |
| Reference | [1]. Chen L, et al. Inhibition of cellular Shp2 activity by a methyl ester analog of SPI-112. Biochem Pharmacol. 2010 Sep 15;80(6):801-10. [2]. Lawrence HR, et al. Inhibitors of Src homology-2 domain containing protein tyrosine phosphatase-2 (Shp2) based on oxindole scaffolds. J Med Chem. 2008 Aug 28;51(16):4948-56. |
