OP-5244 sodium

• CAT Number: I044687
• Molecular Formula: C19H28ClN5NaO9P
• Molecular Weight: 559.87
• Purity: ≥95%
• Synonyms: sodium;[(2R)-2-[[(2R,3S,4R,5R)-5-[6-chloro-4-(cyclopentylamino)pyrazolo[3,4-d]pyrimidin-1-yl]-3,4-dihydroxyoxolan-2-yl]methoxy]-1-hydroxy-3-methoxypropan-2-yl]-hydroxyphosphinate
• InChI: InChI=1S/C19H29ClN5O9P.Na/c1-32-9-19(8-26,35(29,30)31)33-7-12-13(27)14(28)17(34-12)25-16-11(6-21-25)15(23-18(20)24-16)22-10-4-2-3-5-10;/h6,10,12-14,17,26-28H,2-5,7-9H2,1H3,(H,22,23,24)(H2,29,30,31);/q;+1/p-1/t12-,13-,14-,17-,19-;/m1./s1
• InChIKey: KOCAIYNOEDEGSP-KQLLMKJDSA-M
• SMILES: COCC(CO)(OCC1C(C(C(O1)N2C3=NC(=NC(=C3C=N2)NC4CCCC4)Cl)O)O)P(=O)(O)[O-].[Na+]

OP-5244 sodium is a potent and orally active inhibitor of CD73, with an IC50 of 0.25 nM. OP-5244 sodium reverses immunosuppression through blocking of adenosine production, and has the potential for the cancer research[1].
OP-5244 inhibits the production of adenosine (ADO), with an EC50 of 0.79±0.38 nM in H1568 (NSCLC) cells[1].
OP-5244 inhibits AMP hydrolysis to ADO in peripheral blood derived CD8+ T cells with an EC50 of 0.22 nM[1].
OP-5244 (4.1-1000 nM; 96 h) rescues AMP-suppressed CD8+ T cells proliferation and cytokine production[1].
OP-5244 (0.01 nM-10 μM) inhibits ADO production completely in human and murine cancer cell lines (H1568 and EMT6, respectively)[1].
OP-5244 (15 mg/kg/day; s.c. for 13 d) exhibits anti-tumor effects as a single agent as shown by the tumor growth inhibition in mice[1].
OP-5244 (150 mg/kg; p.o. twice daily for 16 d) increases CD8+ T cells infiltration and reverses immunosuppression in mice[1].
OP-5244 (0.2 mg/kg; i.v.) exhibits terminal elimination half-lives (rat 8.5, dog 0.82, cyno 4.6 h) due to moderate plasma clearance (rat 0.18, dog 1.22, cyno 0.05 L/kg/h) and low steady-state volume of distribution (rat 0.22, dog 0.29, cyno 0.10 L/kg/h)[1].
OP-5244 (10 mg/kg; p.o.) exhibits Cmax (rat 0.82, dog 1.25, cyno 1.72 μM) and AUC (rat 1.96, dog 1.75, cyno 14.2 µM•h) [1].

Reference

[1]. Du X, et, al. Orally Bioavailable Small Molecule CD73 Inhibitor (OP-5244) Reverses Immunosuppression Through Blockade of Adenosine Production. J Med Chem. 2020 Aug 31.
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