2298391-60-1
Chemical Structure
STF-1623
- CAS No.: 2298391-60-1
- Formula:C16H22N3O4P
- Molecular Weight:351.34
IUPAC Name: (2-(1-(8-methoxyquinazolin-4-yl)piperidin-4-yl)ethyl)phosphonic acid
InChIKey: IXXUGBPAQOKGTM-UHFFFAOYSA-N
SMILES: O=P(O)(O)CCC1CCN(C=2N=CN=C3C(OC)=CC=CC32)CC1
Biological Activity: STF-1623 is a highly potent, selective, cell-impermeable non-covalent ENPP1 inhibitor, with IC50 values of 0.6 nM and 800 nM against human ENPP1 and ENPP3, respectively. STF-1623 inhibits the hydrolysis of extracellular cGAMP by ENPP1, elevates intratumoral cGAMP levels, and indirectly enhances local cGAS-STING signaling and anti-tumor immunity in tumors. STF-1623 exhibits target-dependent retention in ENPP1-highly expressing tumors, while it undergoes rapid clearance in systemic circulation, and can penetrate into the CSF and brain parenchyma. STF-1623 can be used in studies related to breast cancer, pancreatic cancer, colorectal cancer, glioblastoma, and tumor immunology[1][2][3][4].
| Cat. No. | Product Name | Purity | Description | Pricing | |||||||||||||||||||
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STF-1623 | 99.90% | STF-1623 is a highly potent, selective, cell-impermeable non-covalent ENPP1 inhibitor, with IC50 values of 0.6 nM and 800 nM against human ENPP1 and ENPP3, respectively. STF-1623 inhibits the hydrolysis of extracellular cGAMP by ENPP1, elevates intratumoral cGAMP levels, and indirectly enhances local cGAS-STING signaling and anti-tumor immunity in tumors. STF-1623 exhibits target-dependent retention in ENPP1-highly expressing tumors, while it undergoes rapid clearance in systemic circulation, and can penetrate into the CSF and brain parenchyma. STF-1623 can be used in studies related to breast cancer, pancreatic cancer, colorectal cancer, glioblastoma, and tumor immunology. | ||||||||||||||||||||
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- [1]. Carozza JA, et al. Structure-Aided Development of Small-Molecule Inhibitors of ENPP1, the Extracellular Phosphodiesterase of the Immunotransmitter cGAMP. Cell chemical biology. 2020 Nov 19;27(11):1347-1358.e5.
- [2]. Carozza JA, et al. Extracellular cGAMP is a cancer cell-produced immunotransmitter involved in radiation-induced anti-cancer immunity. Nature cancer. 2020 Feb;1(2):184-196. [Content Brief]
- [3]. Wang S, et al. ENPP1 inhibitor with ultralong drug-target residence time as an innate immune checkpoint blockade cancer therapy. Cell reports. Medicine. 2025 Sep 16;6(9):102336. [Content Brief]
- [4]. Sun G, et al. Soft-Drug-Inspired MnSTF Nano-Adjuvant for Safe and Synergistic cGAS-STING Activation in Tumor Immunotherapy. Advanced science (Weinheim, Baden-Wurttemberg, Germany). 2026 Feb;13(9):e15432.
Keywords
