I-BET282

• CAT Number: I001632
• CAS Number: 1422554-34-4
• Molecular Formula: C25H30N4O4
• Molecular Weight: 450.53
• Purity: ≥95%
• Synonyms: 4-[8-methoxy-1-[(2R)-1-methoxypropan-2-yl]-2-(oxan-4-yl)imidazo[4,5-c]quinolin-7-yl]-3,5-dimethyl-1,2-oxazole
• InChI: InChI=1S/C25H30N4O4/c1-14(13-30-4)29-24-18-11-22(31-5)19(23-15(2)28-33-16(23)3)10-20(18)26-12-21(24)27-25(29)17-6-8-32-9-7-17/h10-12,14,17H,6-9,13H2,1-5H3/t14-/m1/s1
• InChIKey: HYPXHDJBILNWLI-CQSZACIVSA-N
• SMILES: CC1=C(C(=NO1)C)C2=C(C=C3C(=C2)N=CC4=C3N(C(=N4)C5CCOCC5)C(C)COC)OC

I-BET282 is a pan-inhibitor of all eight BET bromodomains, and selectivity over other representative bromodomain-containing proteins. I-BET282 shows pIC50s ranging 6.4-7.7 for BRD2 (BD1/BD2), BRD2 (BD1/BD), BRD3 (BD1/BD), and BRD4 (BD1/BD)[1].
I-BET282 has a weak inhibition of the hERG potassium ion channel (pIC50 4.4-5.1 in a variety of assay formats). I-BET282 shows a low potential to inhibit CYP proteins in vitro, with no evidence of time-dependent inhibition of 2D6 or 3A4[1].
I-BET282 (Male CD1 Mice; 3 mg/kg-p.o.; 1 mg/kg-i.v.) treatment shows the Clb, LBF, Vss, t1/2 (i.v.), and F values of 23 mL/min/kg, 19%, 1.9 L/kg, and 51%, respectively. I-BET282 (Male Wistar Han Rats; 1 mg/kg; p.o.) treatment shows the AUC0-t, Cmax and Tmax values of 467 ng h/mL, 125 ng/mL, and 1 hour, respectively[1].

Reference

[1]. Jones KL, et al. Discovery of a Novel Bromodomain and Extra Terminal Domain (BET) Protein Inhibitor, I-BET282E, Suitable for Clinical Progression. J Med Chem. 2021;64(16):12200-12227.
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