Sirtuin Inhibitors

Cat.No. Product Name Information Product Use Citations Product Validations
S1541 Selisistat (EX-527) Selisistat (EX 527, SEN0014196) is a potent and selective SIRT1 inhibitor with IC50 of 38 nM in a cell-free assay, exhibits >200-fold selectivity against SIRT2 and SIRT3. Phase 2.
Adv Sci (Weinh), 2025, 12(5):e2409516
Cell Death Dis, 2025, 16(1):548
Elife, 2025, 13RP100406
Verified customer review of Selisistat (EX-527)
S1899 Nicotinamide (Niacinamide) Nicotinamide, a water-soluble vitamin, is an active component of coenzymes NAD and NADP, and also act as an inhibitor of sirtuins.
EMBO J, 2025, 44(9):2514-2540
Cell Death Dis, 2025, 16(1):160
Cell Signal, 2025, 127:111587
Verified customer review of Nicotinamide (Niacinamide)
S2804 Sirtinol Sirtinol is a specific SIRT1 and SIRT2 inhibitor with IC50 of 131 μM and 38 μM in cell-free assays, respectively.
Drug Des Devel Ther, 2023, 17:563-577
Shock, 2023, 60(1):75-83
Surg Open Sci, 2023, 12:35-42
Verified customer review of Sirtinol
S8628 3-TYP 3-TYP (3-(1H-1,2,3-triazol-4-yl) pyridine) is a selective SIRT3 inhibitor which is selective for Sirt3 over Sirt1 and Sirt2. The IC50 values for SITR1, SIRT2, SIRT3 are 88 nM, 92 nM, 16 nM respectively.
Cell Death Dis, 2025, 16(1):160
Mol Med Rep, 2025, 31(5)122
Cell Rep, 2024, 43(9):114728
Verified customer review of 3-TYP
S7577 AGK2 AGK2 is a potent, and selective SIRT2 inhibitor with IC50 of 3.5 μM that minimally affects either SIRT1 or SIRT3 at 10-fold higher levels.
Cell Mol Life Sci, 2025, 82(1):45
Aging Cell, 2025, e70075
Cell Mol Gastroenterol Hepatol, 2025, 19(7):101494
Verified customer review of AGK2
S8627 OSS_128167 OSS_128167 (SIRT6-IN-1) is a specific SIRT6 inhibitor with IC50 values of 89, 1578 and 751 μM for SIRT6, SIRT1 and SIRT2, respectively. This compound has anti-viral effect in HBV transcription and replication.
Front Immunol, 2024, 15:1402834
Sci Rep, 2024, 14(1):30924
Antioxidants (Basel), 2023, 12(3)714
S7845 SirReal2 SirReal2 is a potent and selective Sirt2 inhibitor with IC50 of 140 nM.
Cell Death & Differentiation, 2025, 1-12
Cell Death Differ, 2025, 32(9):1679-1690
PLOS ONE, 2024, e0305000
S8245 Thiomyristoyl Thiomyristoyl (TM) is a potent and specific SIRT2 inhibitor with an IC50 of 28 nM. It inhibits SIRT1 with an IC50 value of 98 μM and does not inhibit SIRT3 even at 200 μM.
Nature Immunology, 2026, 213-224
Neuro-Oncology, 2024, 55-67
Cell Rep, 2024, 43(9):114728
S9903 NRD167

NRD167 is a potent and selective SIRT5 inhibitor.

Cell Commun Signal, 2025, 23(1):26
PLoS Pathog, 2025, 21(5):e1013163
Cell Rep, 2024, 43(12):115060
S8460 Salermide Salermide is a reverse amide with a strong in vitro inhibitory effect on Sirt1 and Sirt2. Compared with Sirt1, this compound is even more efficient at inhibiting Sirt2.
Cancer Letters, 2021, 501:20-30
Cancer Lett, 2020, 501:20-30
American Journal of Translational Research, 2019, 4789-4799
S5914 AK 7 AK 7 is a brain-permeable selective SIRT2 inhibitor with an IC50 of 15.5 μM.
Front Mol Neurosci, 2024, 17:1394886
Frontiers in Molecular Neuroscience, 2024, 1394886
Int J Mol Sci, 2023, 24(5)4912
S6744 Inauhzin Inauhzin is a cell-permeable SIRT1 inhibitor with an IC50 of 0.7-2 μM and reactivates p53 by inhibiting SIRT1 deacetylation activity.
Front Cell Infect Microbiol, 2022, 12:1031814
Cancer Lett, 2020, 501:20-30
E1150 SIRT7 inhibitor 97491 SIRT7 inhibitor 97491, a potent SIRT7 inhibitor with an IC50 of 325 nM, reduces deacetylase activity of SIRT7 in a dose-dependent manner. This compound prevents tumor progression by increasing p53 stability through acetylation at K373/382. It promotes apoptosis through caspase pathway.
S2176 Tenovin-3 Tenovin-3 is an inhibitor of SIRT2. This compound is able to increase p53 levels in MCF-7 cells.
S8000 Tenovin-1 Tenovin-1 protects against MDM2-mediated p53 degradation, which involves ubiquitination, and acts through inhibition of protein-deacetylating activities of SirT1 and SirT2. This compound is also an inhibitor of dihydroorotate dehydrogenase (DHODH).
American Journal of Physiology-Renal Physiology, 2024, F326-F337
J Pharm Biomed Anal, 2021, 201:114121
J Transl Med, 2019, 17(1):76
Verified customer review of Tenovin-1
S4900 Tenovin-6 Tenovin-6 is a small molecule activator of p53 transcriptional activity and inhibits dihydroorotate dehydrogenase (DHODH). This compound is also an inhibitor of SirT1 and SirT2.
Cell Death Dis, 2023, 14(10):667
Front Immunol, 2021, 12:685523
Biomed Pharmacother, 2020, 125:109948
S8942 Suramin sodium salt Suramin sodium salt (Suramin hexasodium salt) is a reversible and competitive protein-tyrosine phosphatase (PTPases) inhibitor, also is the potent inhibitor of sirtuins, purified topoisomerase II and SARS-CoV-2 RNA-dependent RNA polymerase (RdRp).
Biol Pharm Bull, 2025, 48(5):657-671
J Biol Chem, 2024, S0021-9258(24)00128-5