Turofexorate Isopropyl (XL335)

Catalog No.S2694

Turofexorate Isopropyl (XL335) is a potent, selective FXR agonist with EC50 of 4 nM, highly selective versus other nuclear receptors, such as LXR, PPAR, ER and etc. Phase 1.

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Turofexorate Isopropyl (XL335) Chemical Structure

Turofexorate Isopropyl (XL335) Chemical Structure
Molecular Weight: 438.47

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Related Compound Libraries

Turofexorate Isopropyl (XL335) is available in the following compound libraries:

Product Information

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  • Turofexorate Isopropyl (XL335) Mechanism

Product Description

Biological Activity

Description Turofexorate Isopropyl (XL335) is a potent, selective FXR agonist with EC50 of 4 nM, highly selective versus other nuclear receptors, such as LXR, PPAR, ER and etc. Phase 1.
Targets FXR [1]
IC50 4 nM(EC50)
In vitro WAY-362450 binds to the ligand-binding domain (LBD) of human FXR. WAY-362450 resides in a predominately hydrophobic pocket with only a few polar atoms making contact with WAY-362450. WAY-362450 promotes transcription of the human BSEP, human SHP, and mouse IBABP genes utilizing reporter constructs with EC50 of 17, 230, and 33 nM, respectively in promoter assays. WAY-362450 at concentration of 1 μM significantly induces mRNAs encoding for BSEP, SHP, and IBABP in human cell cultures to 13-, 2-, and 20-fold, respectively. [1] WAY-362450 at concentration of 1 μM suppresses interleukin-6-induced CRP expression in human Hep3B hepatoma cells, and the inhibitory effect is attenuated when knockdown of FXR by short interfering RNA.
In vivo WAY-362450 administrated intravenously or orally at does of 3 mg/kg in rats with a protracted half-life of 25 h, modest volume of distribution, and low clearance of 3.3 L/kg. WAY-362450 administered orally at dose of 10 mg/kg in normal C57bl/6 mice for a period of 7 days significantly lowers triglycerides to 62.0 ± 6.4 mg/dL and total cholesterol to 78.1 ± 5.0 mg/dL. WAY-362450 administered orally at dose of 1 and 3 mg/kg daily for 6 weeks in LDLR−/− mice, triglycerides is lowered by 19% and 39%, respectively, total cholesterol is lowered by 23% and 50%, respectively and lesion formation by 18% and 36%, respectively. [1] WAY-362450 intraperitoneally administrated at dose of 30 mg/kg daily for 4 days in wild type C57BL/6 mice attenuates lipopolysaccharide-induced serum amyloid P component and serum amyloid A3 mRNA levels in the liver. [3] WAY-362450 orally administered at dose of 30 mg/kg/day for 4 weeks in adult male C57BL/6 mice reduces inflammatory cell infiltration and hepatic fibrosis, the reduction in inflammatory cell infiltration correlates with deceased serum levels of keratinocyte derived chemokine (mKC) and MCP 1 and decreased hepatic gene expression of MCP-1 and VCAM-1, and the reduction of hepatic fibrosis by WAY-362450 treatment corresponded to a reduction in hepatic gene expression of fibrosis markers. [3] WAY-362450 administrated orally at dose of 30mg/kg in LDLR−/− and apoE−/− mice blocks diet-induced hypertriglyceridemia and elevations of non-HDL cholesterol and produced a near complete inhibition of aortic lesion formation, WAY-362450 also induced small heterodimer partner (SHP) expression and repressed cholesterol 7α-hydroxylase (CYP7A1) and sterol 12 α-hydroxylase (CYP8B1) expression. [4]

Protocol(Only for Reference)

Kinase Assay: [1]

Cross-reactivity Studies The selectivity of 6m is evaluated using a panel of nuclear receptor expression plasmids in the forms of wild type receptors or chimeric receptors with Gal-DBD and NHR LBD transiently transfected to CV-1 cells in tissue culture flasks with the NHR responsive luciferase reporters. Except VDR assay, it is a two hybrid assay that measure the interaction of VP16 fused VDR-LBD and Gal-SRC1. The cells are harvested after 6 h transfection and seeded to the assay plates with diluted testing WAY-362450. Different than the agonist assay, the antagonist assay is carried out the in presence of an agonist at concentration of EC75. After 18 h of incubation, the media is removed from the plates and the lucifaerase activity is determined using the luciferase substrate. As shown in Tables S4-S5, compound 6m is highly selective, as little or no significant cross-reactivity with other nuclear hormone receptors is observed at concentrations up to 10 μM

Animal Study: [1]

Animal Models Seven week old male C57bl/6 mice
Formulation NMP:Solutol:PEG400:H2O, 10:10:40:40
Dosages 10 mg/kg
Administration Administrated orally once daily in the morning for a period of 7 days

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Flatt B, et al. J Med Chem, 2009, 52(4), 904-907.

[2] Zhang S, et al. J Hepatol, 2009, 51(2), 380-388.

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Clinical Trial Information( data from http://clinicaltrials.gov, updated on 2016-07-30)

NCT Number Recruitment Conditions Sponsor
Start Date Phases
NCT00509756 Terminated Healthy Wyeth is now a wholly owned subsidiary of Pfizer November 2007 Phase 1
NCT00499629 Completed Healthy Wyeth is now a wholly owned subsidiary of Pfizer October 2007 Phase 1

Chemical Information

Download Turofexorate Isopropyl (XL335) SDF
Molecular Weight (MW) 438.47


CAS No. 629664-81-9
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms Fxr 450
Solubility (25°C) * In vitro DMSO 33 mg/mL warming (75.26 mM)
Ethanol 2 mg/mL (4.56 mM)
Water <1 mg/mL
In vivo NMP+polyethylene glycol 300 (10+90, v+v) 30 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name (E)-isopropyl 3-(3,4-difluorobenzoyl)-1,1-dimethyl-1,2,3,6-tetrahydroazepino[4,5-b]indole-5-carboxylate

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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