SJB2-043 analog (trifluoroacetate salt)

SJB2-043 analog is an inhibitor of OTUB1 and ubiquitin-specific protease 8 (USP8, IC50s = 0.17 and 0.28 nM, respectively) and a derivative of the USP1/UAF1 complex and SARS-CoV-2 PLPro inhibitor SJB2-043 (Cay-36605). It is selective for OTUB1 and USP8 over USP1, USP2, USP7, USP36, and ataxin-3 (IC50s = 1,370, 3,800, >10,000, 8,400, and >10,000 nM, respectively). SJB2-043 analog reduces viability in H1975, EBC-1, NCI H1703, H23, and A549 non-small cell lung cancer (NSCLC) cells (IC50s = 118, 172, 145, 431, and 1,004 nM, respectively). In vivo, SJB2-043 analog (5 mg/kg twice daily) decreases tumor volume in an H1975 mouse xenograft model.Formal Name: (R)-2-(2-chloro-6-fluoro-3-((1-methylpyrrolidin-3-yl)oxy)phenyl)naphtho[2,3-d]oxazole-4,9-dione, trifluoroacetate salt. Synonyms: OTUB1/Ubiquitin-specific Protease 8-IN-1, OTUB1/Ubiquitin-specific Protease 8 Inhibitor 1, OTUB1/USP8-IN-1, OTUB1/USP8 Inhibitor i. Molecular Formula: C22H16ClFN2O4 . XCF3COOH. Formula Weight: 426.8. Purity: >95%. Formulation: (Request formulation change), A solid. Solubility: Acetonitrile: Slightly soluble: 0.1-1 mg/ml, DMSO: Sparingly soluble: 1-10 mg/ml. SMILES: O=C1C2=C(C(C3=C1C=CC=C3)=O)N=C(C4=C(F)C=CC(O[C@H]5CN(C)CC5)=C4Cl)O2.FC(F)(C(O)=O)F. InChi Code: InChI=1S/C22H16ClFN2O4.C2HF3O2/c1-26-9-8-11(10-26)29-15-7-6-14(24)16(17(15)23)22-25-18-19(27)12-4-2-3-5-13(12)20(28)21(18)30-22,3-2(4,5)1(6)7/h2-7,11H,8-10H2,1H3,(H,6,7)/t11-,/m1./s1. InChi Key: ZTOLAWIMKYRBAF-RFVHGSKJSA-N.