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Catalog No. Product Name Information Product Use Citations Product Validations
S0139 MD2-TLR4-IN-1 MD2-TLR4-IN-1 (Compound 22m) is a potent inhibitor of myeloid differentiation protein 2/toll-like receptor 4 (MD2-TLR4). MD2-TLR4-IN-1 (compound 22m) inhibits lipopolysaccharide (LPS)-induced expression of tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) in macrophages with IC50 of 0.89 μM and 0.53 μM, respectively.
S0716 E6446 E6446 is an inhibitor of Toll-like receptor (TLR) 7 and 9 signaling in a variety of human and mouse cell types and inhibits DNA-TLR9 interaction in vitro.
S3924 Ginsenoside Rb1 Ginsenoside Rb1 (Gypenoside Ⅲ) is a protopanaxadiol that has diverse in vitro and in vivo effects, including neuroprotective, anti-inflammatory, and anti-obesity actions. Ginsenoside Rb1, a main constituent of the root of Panax ginseng, inhibits Na+, K+-ATPase activity with IC50 of 6.3±1.0 μM. Ginsenoside also inhibits IRAK-1 activation and phosphorylation of NF-κB p65. Ginsenoside Rb1 reduces the expressions of TLR3, TLR4 and TRAF-6, and down-regulates the levels of TNF-α, IFN-β and iNOS.
J Biol Chem, 2021, S0021-9258(21)00790-0
Mol Immunol, 2021, 139:140-152
J Ethnopharmacol, 2021, S0378-8741(21)00169-0
S4157 Chloroquine diphosphate Chloroquine diphosphate is a 4-aminoquinoline anti-malarial and anti-rheumatoid agent, also acting as an ATM activator. Chloroquine is also an inhibitor of toll-like receptors (TLRs).
Bioact Mater, 2022, 18:459-470
Phytomedicine, 2022, 98:153958
Bone, 2022, 154:116262
S4430 Hydroxychloroquine Sulfate (NSC 4375) Hydroxychloroquine Sulfate (NSC 4375, HCQ) is an antimalarial agent used for the treatment of systemic lupus erythematosus, rheumatoid arthritis and other autoimmune, inflammatory and dermatologic conditions. Also acts as an inhibitor of autophagy and toll-like receptor (TLR) 7/9.
Cell Rep, 2022, 39(3):110712
Cell Death Dis, 2022, 13(3):197
Neurosci Bull, 2022, 10.1007/s12264-022-00818-9
S6573 MD2-IN-1 MD2-IN-1 is an inhibitor of Myeloid differentiation protein 2 (MD2) with a KD value of 189 μM.
Br J Pharmacol, 2021, 10.1111/bph.15412
S6597 TLR2-IN-C29 TLR2-IN-C29 (C29) is a Toll-like receptor 2 (TLR2) inhibitor that inhibits TLR2/1 and TLR2/6 signaling.
Int J Biol Macromol, 2021, 183:145-157
S6719 E6446 dihydrochloride E6446 dihydrochloride is a specific Toll-like receptor 9 inhibitor.
S6934 AMG-9810 AMG-9810 is potent, competitive and selective vanilloid receptor 1 (TRPV1) antagonist and inhibits capsaicin activation with IC50 of 24.5 nM and 85.6 nM for human TRPV1 and rat TRPV1, repectively. AMG-9810 blocks all known modes of TRPV1 activation, including protons-, heat-, and endogenous ligands, such as anandamide, N-arachidonyl dopamine, and oleoyldopamine. AMG-9810 significantly reduces the mRNA expression of TLR2 and TLR4. AMG-9810 also promotes mouse skin tumorigenesis mediated through EGFR/Akt/mTOR signaling.
S6999 Chloroquine (NSC-187208) Chloroquine (NSC-187208, Aralen, CHQ, CQ) is an antimalarial drug and autophagy/lysosome inhibitor. Chloroquine also suppresses Toll-like receptor-9 (TLR9) protein expression. Chloroquine is highly effective agianst SARS-CoV-2 (COVID-19) infection with EC50 of 1.13 μM in Vero E6 cells. Chloroquine has anti-HIV-1 activity.
Bioact Mater, 2022, 18:459-470
Redox Biol, 2022, 52:102292
Cell Death Dis, 2022, 13(2):150
S7455 Resatorvid (TAK-242) Resatorvid (TAK-242, CLI-095) is a small-molecule-specific inhibitor of Toll-like receptor (TLR) 4 signaling, blocking LPS-induced production of NO, TNF-α and IL-6 in macrophages with IC50 of 1.8 nM, 1.9 nM and 1.3 nM, respectively. Resatorvid downregulates expression of TLR4 downstream signaling molecules MyD88 and TRIF. Resatorvid inhibits autophagy.
Cell Death Dis, 2022, 13(4):333
Int J Cancer, 2022, 10.1002/ijc.34028
Sci Rep, 2022, 12(1):3056
S8562 IRAK4-IN-2 IRAK4-IN-2 is a reversible kinase inhibitor that modulates IRAK4 function in both the toll-like receptor (TLR) and interleukin 1 receptor (IL-1R) signaling cascades.
Cancer Lett, 2021, 503:75-90
Cancer Lett, 2021, 503:75-90
S8677 Cu-CPT22 CU-CPT22 shows dose-dependent inhibitory effects blocking Pam3CSK4-induced TLR1/2 activation with an IC50 of 0.58 ± 0.09 µM while no significant inhibition to TLR2/6. It demonstrates minimal non-specific inhibition against a panel of 10 representative kinases (PDGFRB, MET, DDR2, SRC, MAPK1, PAK1, AKT1, PKC-γ, CAMK1, and PLK4).
iScience, 2021, 24(5):102483
Int Immunopharmacol, 2020, 79:106085
Research Square, 2020, 10.21203/rs.3.rs-126752/v1
S9234 Schaftoside Schaftoside, a bioactive compound found in the Herba Desmodii Styracifolii, exhibits pancreatic lipase inhibitory activity. Schaftoside inhibits the expression of TLR4 and Myd88. Schaftoside also decreases Drp1 expression and phosphorylation, and reduces mitochondrial fission.
S9937New CU-CPD107 CU-CPD107 is a selective, dual-activity small-molecule which demonstrated differential activity against the TLR8 agonists and ssRNA ligands. In the presence of R848, CU-CPD107 acts as a TLR8 signaling inhibitor (IC50=13.7 μM). In the presence of ssRNA, CU-CPD107 shows synergistic agonist activities, while CU-CPD107 alone is unable to influence TLR8 signaling.
S0002 IAXO-102 IAXO-102 is an antagonist of TLR4 targeting both MD-2 and CD14 co-receptors. IAXO-102 inhibits MAPK and p65 NF-κB phosphorylation and downregulates the expression of TLR4 dependent proinflammatory proteins. IAXO-102 inhibits experimental abdominal aortic aneurysm (AAA) development.
S0822New TLR4-IN-C34 TLR4-IN-C34 (TLR4-C34, C34, TLR4-C34-IN) is a potent and selective antagonist of Toll-like receptor 4 (TLR4). TLR4-IN-C34 reduces systemic inflammation in mouse models of endotoxemia and necrotizing enterocolitis.
Sci Total Environ, 2022, 838(Pt 2):155825
S4461 CU-CPT-8m CU-CPT-8m (CPD1578) is a specific antagonist of toll-like receptor 8(TLR8) with IC50 of 67 nM and Kd of 220 nM.
S9730 CU-CPT9a

CU-CPT9a is a potent and specific antagonist of Toll-like receptor 8 (TLR8) with IC50 of 0.5 nM.
S0078 1V209 (TLR7 agonist T7) 1V209 (T7, TLR7 agonist T7) is an agonist of Toll-like receptor 7 (TLR7) with anti-tumor effects. 1V209 can be used as vaccine adjuvants, enhances antigen specific humoral and cellular immune responses.
S0494 SM 324405 SM 324405 (compound 9e) is a potent and selective Toll-like receptor 7 (TLR7) agonist with EC50 of 50 nM.
S2952 SM-276001 SM-276001 is a potent and selective agonist of TLR7 that induces antitumor immune responses. SM-276001 is an orally active interferon (IFN) inducer.
S2979 CU-T12-9 CU-T12-9 is a specific agonist of Toll-like receptor (TLR) 1/2 with EC50 of 52.9 nM in HEK-Blue hTLR2 SEAP assay. CU-T12-9 activates both the innate and the adaptive immune systems. CU-T12-9 signals through NF-κB and invokes an elevation of the downstream effectors TNF-α, IL-10, and iNOS.
S7161 Motolimod (VTX-2337) Motolimod (VTX-2337) is a selective and potent Toll-like receptor 8 (TLR8) agonist with EC50 of 100 nM, > 50-fold selectivity over TLR7. Phase 2.
Cell Rep, 2021, 35(7):109143
J Leukoc Biol, 2020, 1
J Pharm Biomed Anal, 2020, 179:112987
S7221 Vesatolimod (GS-9620) Vesatolimod (GS-9620) is a potent and selective orally active small molecule agonist of Toll-like receptor 7.
PLoS Pathog, 2022, 18(3):e1010354
J Pharm Biomed Anal, 2020, 179:112987
Stem Cell Res Ther, 2019, 10(1):387
S8133 Resiquimod (R-848) Resiquimod (R-848, S28463) is an immune response modifier that acts as a potent TLR 7/TLR 8 agonist that induces the upregulation of cytokines such as TNF-α, IL-6 and IFN-α. Resiquimod reduces hepatitis C virus (HCV) infection. Phase 2.
Small, 2022, 18(4):e2103552
Adv Mater, 2021, 33(51):e2104362
Pharmaceutics, 2021, 13(3)365
S9623 Telratolimod Telratolimod (3M-052, MEDI9197) is an agonist of toll-like receptor 7 (TLR-7) and toll-like receptor 8 (TLR-8) with antitumor activity.
S0139 MD2-TLR4-IN-1 MD2-TLR4-IN-1 (Compound 22m) is a potent inhibitor of myeloid differentiation protein 2/toll-like receptor 4 (MD2-TLR4). MD2-TLR4-IN-1 (compound 22m) inhibits lipopolysaccharide (LPS)-induced expression of tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) in macrophages with IC50 of 0.89 μM and 0.53 μM, respectively.
S0716 E6446 E6446 is an inhibitor of Toll-like receptor (TLR) 7 and 9 signaling in a variety of human and mouse cell types and inhibits DNA-TLR9 interaction in vitro.
S3924 Ginsenoside Rb1 Ginsenoside Rb1 (Gypenoside Ⅲ) is a protopanaxadiol that has diverse in vitro and in vivo effects, including neuroprotective, anti-inflammatory, and anti-obesity actions. Ginsenoside Rb1, a main constituent of the root of Panax ginseng, inhibits Na+, K+-ATPase activity with IC50 of 6.3±1.0 μM. Ginsenoside also inhibits IRAK-1 activation and phosphorylation of NF-κB p65. Ginsenoside Rb1 reduces the expressions of TLR3, TLR4 and TRAF-6, and down-regulates the levels of TNF-α, IFN-β and iNOS.
J Biol Chem, 2021, S0021-9258(21)00790-0
Mol Immunol, 2021, 139:140-152
J Ethnopharmacol, 2021, S0378-8741(21)00169-0
S4157 Chloroquine diphosphate Chloroquine diphosphate is a 4-aminoquinoline anti-malarial and anti-rheumatoid agent, also acting as an ATM activator. Chloroquine is also an inhibitor of toll-like receptors (TLRs).
Bioact Mater, 2022, 18:459-470
Phytomedicine, 2022, 98:153958
Bone, 2022, 154:116262
S4430 Hydroxychloroquine Sulfate (NSC 4375) Hydroxychloroquine Sulfate (NSC 4375, HCQ) is an antimalarial agent used for the treatment of systemic lupus erythematosus, rheumatoid arthritis and other autoimmune, inflammatory and dermatologic conditions. Also acts as an inhibitor of autophagy and toll-like receptor (TLR) 7/9.
Cell Rep, 2022, 39(3):110712
Cell Death Dis, 2022, 13(3):197
Neurosci Bull, 2022, 10.1007/s12264-022-00818-9
S6573 MD2-IN-1 MD2-IN-1 is an inhibitor of Myeloid differentiation protein 2 (MD2) with a KD value of 189 μM.
Br J Pharmacol, 2021, 10.1111/bph.15412
S6597 TLR2-IN-C29 TLR2-IN-C29 (C29) is a Toll-like receptor 2 (TLR2) inhibitor that inhibits TLR2/1 and TLR2/6 signaling.
Int J Biol Macromol, 2021, 183:145-157
S6719 E6446 dihydrochloride E6446 dihydrochloride is a specific Toll-like receptor 9 inhibitor.
S6934 AMG-9810 AMG-9810 is potent, competitive and selective vanilloid receptor 1 (TRPV1) antagonist and inhibits capsaicin activation with IC50 of 24.5 nM and 85.6 nM for human TRPV1 and rat TRPV1, repectively. AMG-9810 blocks all known modes of TRPV1 activation, including protons-, heat-, and endogenous ligands, such as anandamide, N-arachidonyl dopamine, and oleoyldopamine. AMG-9810 significantly reduces the mRNA expression of TLR2 and TLR4. AMG-9810 also promotes mouse skin tumorigenesis mediated through EGFR/Akt/mTOR signaling.
S6999 Chloroquine (NSC-187208) Chloroquine (NSC-187208, Aralen, CHQ, CQ) is an antimalarial drug and autophagy/lysosome inhibitor. Chloroquine also suppresses Toll-like receptor-9 (TLR9) protein expression. Chloroquine is highly effective agianst SARS-CoV-2 (COVID-19) infection with EC50 of 1.13 μM in Vero E6 cells. Chloroquine has anti-HIV-1 activity.
Bioact Mater, 2022, 18:459-470
Redox Biol, 2022, 52:102292
Cell Death Dis, 2022, 13(2):150
S7455 Resatorvid (TAK-242) Resatorvid (TAK-242, CLI-095) is a small-molecule-specific inhibitor of Toll-like receptor (TLR) 4 signaling, blocking LPS-induced production of NO, TNF-α and IL-6 in macrophages with IC50 of 1.8 nM, 1.9 nM and 1.3 nM, respectively. Resatorvid downregulates expression of TLR4 downstream signaling molecules MyD88 and TRIF. Resatorvid inhibits autophagy.
Cell Death Dis, 2022, 13(4):333
Int J Cancer, 2022, 10.1002/ijc.34028
Sci Rep, 2022, 12(1):3056
S8562 IRAK4-IN-2 IRAK4-IN-2 is a reversible kinase inhibitor that modulates IRAK4 function in both the toll-like receptor (TLR) and interleukin 1 receptor (IL-1R) signaling cascades.
Cancer Lett, 2021, 503:75-90
Cancer Lett, 2021, 503:75-90
S8677 Cu-CPT22 CU-CPT22 shows dose-dependent inhibitory effects blocking Pam3CSK4-induced TLR1/2 activation with an IC50 of 0.58 ± 0.09 µM while no significant inhibition to TLR2/6. It demonstrates minimal non-specific inhibition against a panel of 10 representative kinases (PDGFRB, MET, DDR2, SRC, MAPK1, PAK1, AKT1, PKC-γ, CAMK1, and PLK4).
iScience, 2021, 24(5):102483
Int Immunopharmacol, 2020, 79:106085
Research Square, 2020, 10.21203/rs.3.rs-126752/v1
S9234 Schaftoside Schaftoside, a bioactive compound found in the Herba Desmodii Styracifolii, exhibits pancreatic lipase inhibitory activity. Schaftoside inhibits the expression of TLR4 and Myd88. Schaftoside also decreases Drp1 expression and phosphorylation, and reduces mitochondrial fission.
S9937New CU-CPD107 CU-CPD107 is a selective, dual-activity small-molecule which demonstrated differential activity against the TLR8 agonists and ssRNA ligands. In the presence of R848, CU-CPD107 acts as a TLR8 signaling inhibitor (IC50=13.7 μM). In the presence of ssRNA, CU-CPD107 shows synergistic agonist activities, while CU-CPD107 alone is unable to influence TLR8 signaling.
S0002 IAXO-102 IAXO-102 is an antagonist of TLR4 targeting both MD-2 and CD14 co-receptors. IAXO-102 inhibits MAPK and p65 NF-κB phosphorylation and downregulates the expression of TLR4 dependent proinflammatory proteins. IAXO-102 inhibits experimental abdominal aortic aneurysm (AAA) development.
S0822New TLR4-IN-C34 TLR4-IN-C34 (TLR4-C34, C34, TLR4-C34-IN) is a potent and selective antagonist of Toll-like receptor 4 (TLR4). TLR4-IN-C34 reduces systemic inflammation in mouse models of endotoxemia and necrotizing enterocolitis.
Sci Total Environ, 2022, 838(Pt 2):155825
S4461 CU-CPT-8m CU-CPT-8m (CPD1578) is a specific antagonist of toll-like receptor 8(TLR8) with IC50 of 67 nM and Kd of 220 nM.
S9730 CU-CPT9a

CU-CPT9a is a potent and specific antagonist of Toll-like receptor 8 (TLR8) with IC50 of 0.5 nM.
S0078 1V209 (TLR7 agonist T7) 1V209 (T7, TLR7 agonist T7) is an agonist of Toll-like receptor 7 (TLR7) with anti-tumor effects. 1V209 can be used as vaccine adjuvants, enhances antigen specific humoral and cellular immune responses.
S0494 SM 324405 SM 324405 (compound 9e) is a potent and selective Toll-like receptor 7 (TLR7) agonist with EC50 of 50 nM.
S2952 SM-276001 SM-276001 is a potent and selective agonist of TLR7 that induces antitumor immune responses. SM-276001 is an orally active interferon (IFN) inducer.
S2979 CU-T12-9 CU-T12-9 is a specific agonist of Toll-like receptor (TLR) 1/2 with EC50 of 52.9 nM in HEK-Blue hTLR2 SEAP assay. CU-T12-9 activates both the innate and the adaptive immune systems. CU-T12-9 signals through NF-κB and invokes an elevation of the downstream effectors TNF-α, IL-10, and iNOS.
S7161 Motolimod (VTX-2337) Motolimod (VTX-2337) is a selective and potent Toll-like receptor 8 (TLR8) agonist with EC50 of 100 nM, > 50-fold selectivity over TLR7. Phase 2.
Cell Rep, 2021, 35(7):109143
J Leukoc Biol, 2020, 1
J Pharm Biomed Anal, 2020, 179:112987
S7221 Vesatolimod (GS-9620) Vesatolimod (GS-9620) is a potent and selective orally active small molecule agonist of Toll-like receptor 7.
PLoS Pathog, 2022, 18(3):e1010354
J Pharm Biomed Anal, 2020, 179:112987
Stem Cell Res Ther, 2019, 10(1):387
S8133 Resiquimod (R-848) Resiquimod (R-848, S28463) is an immune response modifier that acts as a potent TLR 7/TLR 8 agonist that induces the upregulation of cytokines such as TNF-α, IL-6 and IFN-α. Resiquimod reduces hepatitis C virus (HCV) infection. Phase 2.
Small, 2022, 18(4):e2103552
Adv Mater, 2021, 33(51):e2104362
Pharmaceutics, 2021, 13(3)365
S9623 Telratolimod Telratolimod (3M-052, MEDI9197) is an agonist of toll-like receptor 7 (TLR-7) and toll-like receptor 8 (TLR-8) with antitumor activity.
S9937New CU-CPD107 CU-CPD107 is a selective, dual-activity small-molecule which demonstrated differential activity against the TLR8 agonists and ssRNA ligands. In the presence of R848, CU-CPD107 acts as a TLR8 signaling inhibitor (IC50=13.7 μM). In the presence of ssRNA, CU-CPD107 shows synergistic agonist activities, while CU-CPD107 alone is unable to influence TLR8 signaling.
S0822New TLR4-IN-C34 TLR4-IN-C34 (TLR4-C34, C34, TLR4-C34-IN) is a potent and selective antagonist of Toll-like receptor 4 (TLR4). TLR4-IN-C34 reduces systemic inflammation in mouse models of endotoxemia and necrotizing enterocolitis.
Sci Total Environ, 2022, 838(Pt 2):155825
Tags: TLR inhibitor|TLR agonist|TLR activator|TLR inducer|TLR antagonist|TLR signaling pathway|TLR assay kit