GFB-8438

• CAT Number: I016917
• CAS Number: 2304549-73-1
• Molecular Formula: C16H14ClF3N4O2
• Molecular Weight: 386.76
• Purity: ≥95%
• Synonyms: 5-chloro-4-[3-oxo-4-[[2-(trifluoromethyl)phenyl]methyl]piperazin-1-yl]-1H-pyridazin-6-one
• InChI: InChI=1S/C16H14ClF3N4O2/c17-14-12(7-21-22-15(14)26)23-5-6-24(13(25)9-23)8-10-3-1-2-4-11(10)16(18,19)20/h1-4,7H,5-6,8-9H2,(H,22,26)
• InChIKey: MITRKIWBJVJRAM-UHFFFAOYSA-N
• SMILES: C1CN(C(=O)CN1C2=C(C(=O)NN=C2)Cl)CC3=CC=CC=C3C(F)(F)F

GFB-8438 is a potent and subtype selective TRPC5 inhibitor, with IC50s of 0.18 and 0.29 μM of hTRPC5 and hTRPC4, respectively. GFB-8438 shows excellent selectivity against TRPC6, other TRP family members, NaV 1.5, as well as limited activity against the hERG channel. GFB-8438 protects mouse podocytes from injury induced by protamine sulfate model[1].
Pretreatment of mouse podocyte with GFB-8438 (1 μM for 30 min), followed by incubation with protamine sulfate, effectively blocked synaptopodin loss and cytoskeletal remodeling[1].
GFB-8438 (30 mg/kg; s.c.; daily for 3 weeks) is efficacious in a hypertensive deoxycorticosterone acetate (DOCA)-salt rat model of focal segmental glomerulosclerosis (FSGS), significantly reducing both total protein and albumin concentrations in urine[1].
GFB-8438 (1 mg/kg; i.v.) treatment shows the Cl, VSS, and  t1/2 were 31 mL/min/kg, 1.17 L/kg, and 0.5 hours, respectively[1].

Reference

[1]. Yu M, et al.Discovery of a Potent and Selective TRPC5 Inhibitor, Efficacious in a Focal Segmental Glomerulosclerosis Model.ACS Med Chem Lett. 2019 Oct 22;10(11):1579-1585.
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