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Catalog No. TQ0257   CAS 172922-91-7
Synonyms: 6-Formylindolo[3,2-b]carbazole

FICZ is a potent aryl agonist for the hydrocarbon receptor (AhR, Kd: 70 pM).

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FICZ, CAS 172922-91-7
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Purity: 98%
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Biological Description
Chemical Properties
Storage & Solubility Information
Description FICZ is a potent aryl agonist for the hydrocarbon receptor (AhR, Kd: 70 pM).
Targets&IC50 Aryl hydrocarbon receptor:70 pM (Kd)
In vitro FICZ (0.01 nM-1 μM) alone or in combination with 50 nM MNF induces sustained CYP1A1 activity and leads to oxidative stress and activation of apoptosis via a mitochondrial-dependent pathway. In HepG2 cells, FICZ stimulates cell growth at low concentrations but inhibits cell growth at high concentrations [1]. FICZ (10-30 μM) significantly decreases CEH viability with an estimated LC50 (95% confidence intervals) of 14 μM. FICZ shows concentration-dependent effects on EROD activity in CEH cultures, with the mean EC50 values at 3, 8, and 24 h of 0.016 nM, 0.80 nM, and 11 nM, respectively [2]. CYP1 inhibition in the presence of FICZ results in enhanced AHR activation, suggesting that FICZ accumulates in the cell when its metabolism is blocked. CYP1 enzymes play a role in regulating the biological effects of FICZ [3]. FICZ treatment increases transcript expression of CYP1A1 in a dose-dependent manner in both the parental iPSC line and the CYP1A1 targeted clone [4].
Cell Research The cell viability of CEH treated with FICZ or TCDD is studied with the untreated cells (used as a live cell control) and sodium hypochlorite (5%)-treated cells (used as a dead cell control). This assay is based upon the bioluminescent measurement of adenosine triphosphate (ATP) that is present in all metabolically active cells. Luciferase is utilized in this method to catalyze the formation of light from ATP and luciferin. CEH is lysed 24 h after dosing and the luminescence emitted from the ATP-dependent oxidation of luciferin is measured with a LuminoSkan Ascent luminometer [2].
Synonyms 6-Formylindolo[3,2-b]carbazole
Molecular Weight 284.31
Formula C19H12N2O
CAS No. 172922-91-7


Powder: -20°C for 3 years

In solvent: -80°C for 2 years

Solubility Information

DMSO: 10 mg/mL (35.17 mM), Need ultrasonic and warming

( < 1 mg/ml refers to the product slightly soluble or insoluble )

References and Literature

1. Mohammadi-Bardbori A, et al. The highly bioactive molecule and signal substance 6-formylindolo[3,2-b]carbazole (FICZ) plays bi-functional roles in cell growth and apoptosis in vitro. Arch Toxicol. 2017 Mar 13 2. Farmahin R, et al. Time-dependent transcriptomic and biochemical responses of 6-formylindolo[3,2-b]carbazole (FICZ) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) are explained by AHR activation time. Biochem Pharmacol. 2016 Sep 1;115:134-43 3. Wincent E, et al. Biological effects of 6-formylindolo[3,2-b]carbazole (FICZ) in vivo are enhanced by loss of CYP1A function in an Ahr2-dependent manner. Biochem Pharmacol. 2016 Jun 15;110-111:117-29. 4. Smith BW, et al. Genome Editing of the CYP1A1 Locus in iPSCs as a Platform to Map AHR Expression throughout Human Development. Stem Cells Int. 2016;2016:2574152.

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FICZ 172922-91-7 Immunology/Inflammation Aryl Hydrocarbon Receptor inhibit 6-Formylindolo[3,2-b]carbazole Inhibitor AhR inhibitor