Lonafarnib
Based on 14 publication(s) in Google Scholar
Lonafarnib (Sch66336) is a potent and orally active, and CNS-penetrant farnesyl transferase (FTase) inhibitor. Lonafarnib inhibits the activities of H-ras, K-ras and N-ras with IC50 values of 1.9 nM, 5.2 nM and 2.8 nM, respectively. Lonafarnib also has anti-hepatitis delta virus (HDV) activities.
For research use only. We do not sell to patients.
- Purity: 99.85%
- CAS No.: 193275-84-2
- Formula: C27H31Br2ClN4O2
- Molecular Weight:638.82
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
Publications Citing Use of MedChemExpress (MCE) Lonafarnib
More- Nat Commun. 2024 Apr 23;15(1):3422. [Abstract]
- Nat Commun. 2019 May 22;10(1):2265. [Abstract]
- Adv Sci (Weinh). 2025 Jun 25:e15176. [Abstract]
- J Clin Invest. 2025 Jul 15;135(14):e189048. [Abstract]
- Int J Biol Sci. 2025 Jan 1;21(2):758-771. [Abstract]
- Cell Death Dis. 2025 Aug 7;16(1):595. [Abstract]
- Phytomedicine. 2023 Nov:120:155066. [Abstract]
- Aging Cell. 2019 Aug;18(4):e12979. [Abstract]
- Eur J Pharmacol. 2026 Mar 28:1019:178723. [Abstract]
- Virol Sin. 2023 Oct;38(5):778-786. [Abstract]
- J Neurosci. 2022 Aug 3;42(31):6090-6107. [Abstract]
- Sci Rep. 2019 Jul 10;9(1):10021. [Abstract]
- J Virol. 2025 Dec 9:e0148725. [Abstract]
- Med Mycol. 2018 Jun 1;56(4):452-457. [Abstract]
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Histological Imaging/Staining
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IF
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WB
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RT-PCR
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RT-PCR
Biological Activity
IC50: 1.9 nM (H-ras), 5.2 nM (K-ras), 2.8 nM (N-ras)[1]
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| Caco-2 | CC50 |
10.71 μM
Compound: LONAFARNIB
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Toxicity against Caco-2 cells determined at 48 hours by intracellular ATP concentration using the CellTiter-Glo Luminescent Cell Viability Assay
Toxicity against Caco-2 cells determined at 48 hours by intracellular ATP concentration using the CellTiter-Glo Luminescent Cell Viability Assay
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10.21203/rs.3.rs-23951/v1 |
| Caco-2 | IC50 |
5.68 μM
Compound: LONAFARNIB
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Determination of IC50 values for inhibition of SARS-CoV-2 induced cytotoxicity of Caco-2 cells after 48 hours by high content imaging
Determination of IC50 values for inhibition of SARS-CoV-2 induced cytotoxicity of Caco-2 cells after 48 hours by high content imaging
|
10.21203/rs.3.rs-23951/v1 |
| COS-1 | IC50 |
75 nM
Compound: 5
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inhibition of tumor colony formation in soft agar
inhibition of tumor colony formation in soft agar
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[PMID: 10411485] |
| COS-7 | IC50 |
10 nM
Compound: 15
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Inhibiting the farnesylation of H-ras proteins in COS-7 monkey cells transiently expressing H-ras[Val12]-CVLS in the whole cell assay.
Inhibiting the farnesylation of H-ras proteins in COS-7 monkey cells transiently expressing H-ras[Val12]-CVLS in the whole cell assay.
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[PMID: 9822558] |
| COS-7 | IC50 |
10 nM
Compound: 9b
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Inhibition of FTase in human COS7 cells
Inhibition of FTase in human COS7 cells
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[PMID: 20925433] |
| HCT-116 | EC50 |
74 nM
Compound: SCH66336
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Inhibition of anchorage-independent growth in human HCT-116 cells assessed as inhibition of colony formation in presence of 10% FBS
Inhibition of anchorage-independent growth in human HCT-116 cells assessed as inhibition of colony formation in presence of 10% FBS
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[PMID: 16222147] |
| HCT-116 | EC50 |
94 nM
Compound: SCH66336
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Inhibition of anchorage-independent growth in human HCT-116 cells assessed as inhibition of colony formation incubated for 14 days in presence of 10% FBS by imaging based soft agar colony formation assay
Inhibition of anchorage-independent growth in human HCT-116 cells assessed as inhibition of colony formation incubated for 14 days in presence of 10% FBS by imaging based soft agar colony formation assay
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[PMID: 16222147] |
| HCT-116 | IC50 |
0.07 μM
Compound: 15
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Compound was measured for inhibition of HCT116 tumor cell line in colon under soft agar assay.
Compound was measured for inhibition of HCT116 tumor cell line in colon under soft agar assay.
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[PMID: 9822558] |
| MCF7 | IC50 |
0.05 μM
Compound: 15
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Compound was measured for inhibition of MCF-7 tumor cell line in breast under soft agar assay.
Compound was measured for inhibition of MCF-7 tumor cell line in breast under soft agar assay.
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[PMID: 9822558] |
| NIH3T3 | EC50 |
0.16 μM
Compound: 2, SCH-66336
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Effective concentration against Ha-RAS processing in NIH3T3 ras-transformed cells
Effective concentration against Ha-RAS processing in NIH3T3 ras-transformed cells
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[PMID: 12657284] |
| NIH3T3 | EC50 |
100 nM
Compound: Lonafarnib
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Inhibition of Ras farnesylation in H-Ras transformed NIH3T3 cells
Inhibition of Ras farnesylation in H-Ras transformed NIH3T3 cells
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[PMID: 15454228] |
| NIH3T3 | EC50 |
50 nM
Compound: SCH66336
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Inhibition of anchorage-independent growth in H-Ras transformed mouse NIH3T3 cells assessed as inhibition of colony formation in presence of 10% bovine serum
Inhibition of anchorage-independent growth in H-Ras transformed mouse NIH3T3 cells assessed as inhibition of colony formation in presence of 10% bovine serum
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[PMID: 16222147] |
| NIH3T3 | EC50 |
56 nM
Compound: SCH66336
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Inhibition of anchorage-independent growth in H-Ras transformed mouse NIH3T3 cells assessed as inhibition of colony formation incubated for 14 days in presence of 10% bovine serum by imaging based soft agar colony formation assay
Inhibition of anchorage-independent growth in H-Ras transformed mouse NIH3T3 cells assessed as inhibition of colony formation incubated for 14 days in presence of 10% bovine serum by imaging based soft agar colony formation assay
|
[PMID: 16222147] |
| NIH3T3 | IC50 |
2.7 μM
Compound: SCH66336
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TP_TRANSPORTER: inhibition of DNR efflux (DNR: ? uM) in MDR1-expressing NIH3T3 cells
TP_TRANSPORTER: inhibition of DNR efflux (DNR: ? uM) in MDR1-expressing NIH3T3 cells
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[PMID: 11606389] |
| NIH3T3 | IC50 |
500 μM
Compound: SCH-66336
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Inhibition of K-Ras transformed NIH3T3 cell proliferation
Inhibition of K-Ras transformed NIH3T3 cell proliferation
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[PMID: 15501065] |
| NIH3T3 | IC50 |
72 μM
Compound: SCH-66336
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Inhibition of H-Ras transformed NIH3T3 cell proliferation
Inhibition of H-Ras transformed NIH3T3 cell proliferation
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[PMID: 15501065] |
| NIH-H | IC50 |
72 nM
Compound: 15
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Compound ability to inhibit anchorage-independent growth of NIH-H tumor cell lines in soft agar.
Compound ability to inhibit anchorage-independent growth of NIH-H tumor cell lines in soft agar.
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[PMID: 9822558] |
| NIH-K | IC50 |
500 nM
Compound: 15
|
Compound ability to inhibit anchorage-independent growth of NIH-K tumor cell lines in soft agar.
Compound ability to inhibit anchorage-independent growth of NIH-K tumor cell lines in soft agar.
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[PMID: 9822558] |
Lonafarnib (Sch66336) potently inhibits Ha-Ras processing in whole cells and blocks the trans formed growth properties of fibroblasts and human tumor cell lines expressing activated Ki-Ras proteins[1]. All treatment groups containing Lonafarnib (10 μM) show a significantly higher level of unfarnesylated H-Ras (116-137%) compared to control treatment[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 193275-84-2
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Appearance Solid
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Molecular Weight 638.82
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Formula C27H31Br2ClN4O2
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Color White to off-white
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SMILES
O=C(N)N1CCC(CC1)CC(N2CCC(CC2)[C@@H]3C4=C(C=C(C=C4CCC5=CC(Br)=CN=C53)Cl)Br)=O
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Synonyms
Sch66336
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (14)
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Journal Impact Factor
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Most Recent
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Nat Commun
Targeting NRAS via miR-1304-5p or farnesyltransferase inhibition confers sensitivity to ALK inhibitors in ALK-mutant neuroblastoma. [Abstract]2024 Apr 23;15(1):3422. PMID: 38653965
Lonafarnib purchased from MedChemExpress. Usage Cited in: Nat Commun. 2024 Apr 23;15(1):3422. [Abstract]
Immunohistochemistry (pERK) in tumours from NSG mice treated with Lonafarnib (10 μL/g; p.o.; once daily). Lonafarnib led to a profound decrease in pERK expression levels.
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Nat Commun
Recapitulation of HDV infection in a fully permissive hepatoma cell line allows efficient drug evaluation. [Abstract]2019 May 22;10(1):2265. PMID: 31118422
Lonafarnib purchased from MedChemExpress. Usage Cited in: Nat Commun. 2019 May 22;10(1):2265. [Abstract]
Lonafarnib (1.8 μM) treatment resulted in significant and selective increase in intracellular L-HDAg of HepNB2.7 cells.
Lonafarnib purchased from MedChemExpress. Usage Cited in: Nat Commun. 2019 May 22;10(1):2265. [Abstract]
Lonafarnib (1.8 μM) treatment caused an eightfold increase of intracellular L-HDAg in HepNB2.7 cells compared with the untreated controls, while the levels of S-HDAg only marginally (1.6-fold) increased.
Lonafarnib purchased from MedChemExpress. Usage Cited in: Nat Commun. 2019 May 22;10(1):2265. [Abstract]
Lonafarnib (1.8 μM) treatment led to a twofold increase in the total intracellular HDV genomes.
Lonafarnib purchased from MedChemExpress. Usage Cited in: Nat Commun. 2019 May 22;10(1):2265. [Abstract]
Quantitative PCR on intracellular HDV replicative intermediates and the two markers for IFN induction (IFN-λ and RSAD2) was performed. Lonafarnib (1.8 μM) profoundly increased the intracellular HDV replication and the induction of IFN responses in PHH co-infected with HDV and HBV.
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Adv Sci (Weinh)
Multimodal Investigation of Angiogenesis and Its Prevention by Small Compounds in a Zebrafish Cancer Model. [Abstract]2025 Jun 25:e15176. PMID: 40557748 -
J Clin Invest
Cancer-associated SPOP mutations enlarge nuclear size and facilitate nuclear envelope rupture upon farnesyltransferase inhibitor treatment. [Abstract]2025 Jul 15;135(14):e189048. PMID: 40662365 -
Int J Biol Sci
2025 Jan 1;21(2):758-771. PMID: 39781460 -
Cell Death Dis
Activation of AKT via a dual mechanism enhances the susceptibility of melanoma cells to glucose deprivation. [Abstract]2025 Aug 7;16(1):595. PMID: 40774947 -
Phytomedicine
Astragaloside IV protects against lung injury and pulmonary fibrosis in COPD by targeting GTP-GDP domain of RAS and downregulating the RAS/RAF/FoxO signaling pathway. [Abstract]2023 Nov:120:155066. PMID: 37690229 -
Aging Cell
2019 Aug;18(4):e12979. PMID: 31152494 -
Eur J Pharmacol
Heat stroke-induced structural and functional impairments of cognition-relevant brain areas in mice is associated with alpha-7 nicotinic acetylcholine receptors downregulation. [Abstract]2026 Mar 28:1019:178723. PMID: 41786068 -
Virol Sin
Identification of a receptor tyrosine kinase inhibitor CP-724714 inhibits SADS-CoV related swine diarrhea coronaviruses infection in vitro. [Abstract]2023 Oct;38(5):778-786. PMID: 37406816 -
J Neurosci
Ras Inhibitor Lonafarnib Rescues Structural and Functional Impairments of Synapses of Aβ1-42 Mice via α7nAChR-Dependent BDNF Upregulation. [Abstract]2022 Aug 3;42(31):6090-6107. PMID: 35760529 -
Sci Rep
Generation and characterization of a stable cell line persistently replicating and secreting the human hepatitis delta virus. [Abstract]2019 Jul 10;9(1):10021. PMID: 31292511 -
J Virol
Molecular mechanism of resistance to lonafarnib conferred by mutations in the cysteine-rich region of respiratory syncytial virus fusion glycoprotein and discovery of a lonafarnib-derived antiviral PROTAC. [Abstract]2025 Dec 9:e0148725. PMID: 41364004 -
Med Mycol
2018 Jun 1;56(4):452-457. PMID: 29420769
Solvent & Solubility
DMSO : 25 mg/mL (39.13 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (3.91 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (3.91 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Protocol
FPTactivity is determined by measuring the transfer of [3H]farnesyl from [3H]farnesyl PPi to trichloroacetic acid-precipitable Ha-Ras-CVLS. GGPT-1 activity is similarly determined using [3H]geranylgeranyl diphosphate and Ha-Ras-CVLL as substrates[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
CellTiter96 Aqueous Assay kit is used. Assays are performed with 5000 cells/well in a 96-well tissue culture plate. Plates are irradiated 24 h after drug exposure and assayed 96 h after XRT, with fresh drug treatments applied each day. For quantification, dye is added directly to each well, plates are washed as per the manufactures recommendation and cell viability determined by optical density. Significance is analyzed using the Student’s T-test. 12-well plates are seeded with 100,000 cells/well. Drug treatments are initiated 24 h after plating, and media is replaced every 24 h for a total of 96 h of drug exposure. Plates are irradiated after 24 h of drug exposure. Cells from triplicate sets of treatments are trypsonized and counted 48 h after irradation using a Z1 series coulter counter, and compared to cell numbers from wells counted on Day 1 (the day drug treatment is initiated). Proliferation after drug treatments are normalized to the control wells and expressed as % of the control treatment. Significance is analyzed using the Student’s T-test[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Mice[2]
Lonafarnib is given once daily at 80mg/kg with twice weekly weightings to ensure accurate dosing. Temozolomide (Tem) is given by gavage at 5 mg/kg 90 min prior to XRT. For irradiation, anesthetized mice are placed in a lead shielding apparatus which limited radiation exposure to the head only. Treatment (2.5Gy/day for two days) is delivered using a Gammacell 40 irradiator delivering 100 rads/min. For in vivo combination experiments, suboptimal doses of XRT/Tem are selected to permit identification of synergistic effects of Lonafarnib.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Purity & Documentation
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Data Sheet (283 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Portuguese - PT (396 KB)
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Handling Instructions (2659 KB)
References
[1]. Liu M, et al. Antitumor activity of SCH 66336, an orally bioavailable tricyclic inhibitor of farnesyl protein transferase, in human tumor xenograft models and wap-ras transgenic mice. Cancer Res. 1998 Nov 1;58(21):4947-56. [Content Brief]
[2]. Chaponis D, et al. Lonafarnib (SCH66336) improves the activity of temozolomide and radiation for orthotopic malignant gliomas. J Neurooncol. 2011 Aug;104(1):179-89. [Content Brief]
[3]. Koh C,et al. Oral prenylation inhibition with lonafarnib in chronic hepatitis D infection: a proof-of-concept randomised, double-blind, placebo-controlled phase 2A trial. Lancet Infect Dis. 2015 Oct;15(10):1167-1174. [Content Brief]
[4]. Hernandez I, et al. A farnesyltransferase inhibitor activates lysosomes and reduces tau pathology in mice with tauopathy. Sci Transl Med. 2019 Mar 27;11(485):eaat3005. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.5654 mL | 7.8269 mL | 15.6539 mL | 39.1347 mL |
| 5 mM | 0.3131 mL | 1.5654 mL | 3.1308 mL | 7.8269 mL | |
| 10 mM | 0.1565 mL | 0.7827 mL | 1.5654 mL | 3.9135 mL | |
| 15 mM | 0.1044 mL | 0.5218 mL | 1.0436 mL | 2.6090 mL | |
| 20 mM | 0.0783 mL | 0.3913 mL | 0.7827 mL | 1.9567 mL | |
| 25 mM | 0.0626 mL | 0.3131 mL | 0.6262 mL | 1.5654 mL | |
| 30 mM | 0.0522 mL | 0.2609 mL | 0.5218 mL | 1.3045 mL |