Inauhzin(INZ) is a novel small molecule that effectively reactivates p53 by inhibiting SIRT1 activity, promotes p53-dependent apoptosis of human cancer cells without causing apparently genotoxic stress(IC50=3 uM, in A549 cell).

MC3482 is a potent, specific SIRT5 inhibitor, increases the ammonia content in cells leading to autophagy and mitophagy, shows selective SIRT5 inhibition vs SIRT1-3.

Nicotinamide riboside tartrate, an orally active NAD+ precursor, increases NAD+ levels and activates SIRT1 and SIRT3. Nicotinamide riboside tartrate is a source of vitamin B3 (niacin) and enhances oxidative metabolism, protection against high fat diet-induced metabolic abnormalities. Nicotinamide riboside tartrate reduces cognitive deterioration in a transgenic mouse model of Alzheimer’s disease.

Nicotinamide riboside malate, an orally active NAD+ precursor, increases NAD+ levels and activates SIRT1 and SIRT3. Nicotinamide riboside malate is a source of vitamin B3 (niacin) and enhances oxidative metabolism, protection against high fat diet-induced metabolic abnormalities. Nicotinamide riboside malate reduces cognitive deterioration in a transgenic mouse model of Alzheimer’s disease.

SIRT-IN-3 is a potent SIRT inhibitor, with an IC50 of 17 μM for SIRT1. SIRT-IN-3 shows about 4-fold and 14-fold selectivity for SIRT1 over SIRT2 and SIRT3, respectively (IC50 of 74 μM and 235 μM for SIRT2 and SIRT3, respectively).

SIRT7 inhibitor 97491, a potent SIRT7 inhibitor with an IC50 of 325 nM, reduces deacetylase activity of SIRT7 in a dose-dependent manner. SIRT7 inhibitor 97491 prevents tumor progression by increasing p53 stability through acetylation at K373/382. SIRT7 inhibitor 97491 promotes apoptosis through caspase pathway..

SIRT1-IN-1 is a selective SIRT1 inhibitor with an IC50 of 0.205 μM. SIRT1-IN-1 inhibits SIRT2 with an IC50 of 11.5 μM. SIRT1-IN-1, a indole, is a cytomegalovirus (CMV) inhibitors and has antiviral activity.

CHIC35, an analog of EX-527, is a potent and selective inhibitor of SIRT1 (IC50=0.124 µM). CHIC35 shows potential selective inhibition against SIRT1 over SIRT2 (IC50=2.8 µM) or SIRT3 (IC50>100 µM). CHIC35 has anti-inflammatory effects and can be used for CHARGE syndrome research.

SRT3657 is a brain-permeable activator of SIRT1, with neuroprotective effect.

7-Chloro-4-(piperazin-1-yl)quinolone is an important scaffold in medicinal chemistry. 7-Chloro-4-(piperazin-1-yl)quinolone is a potent sirtuin inhibitor and also inhibits the serotonin uptake (IC50 of 50 μM). 7-Chloro-4-(piperazin-1-yl)quinolone exhibits antimalarial activity on D10 and K1 strains of P. falciparum with IC50s of 1.18 μM and 0.97 μM, respectively.

3β,6α,12β-Dammar-E-20(22)-ene-3,6,12,25-tetraol, a SIRT1 activator, exhibits significant stimulation of SIRT1 activity. Anti-tumor activity.

NRD167 is a potent and selective SIRT5 inhibitor.

Ainsliadimer C, a potential activator of SIRT1, ameliorates inflammatory responses in adipose tissue.

ADTL-SA1215 is a first-in-class specific small-molecule activator of SIRT3 that modulates autophagy in triple negative breast cancer.

JGB1741 (ILS-JGB-1741) is a potent and specific SIRT1 activity inhibitor with an IC50 of ∼15 μM. JGB1741 is a weak SIRT2 and SIRT3 inhibitor with an all IC50>100 μM. JGB1741 increases the acetylated p53 levels leading to p53-mediated apoptosis with modulation of Bax/Bcl2 ratio, cytochrome c release and PARP cleavage. JGB1741 has the potential for breast cancer research.

SIRT1 activator 3 is a potent activator of Sirt1 and suppresses TNF-α in a dose-dependent manner. SIRT1 activator 3 has the potential for anti-obesity or anti-diabetic researches.

AGK7 is a potent inhibitor of sirtuin 2 (SIRT2). AGK7 rescues alpha-synuclein toxicity and modified inclusion morphology in a cellular model of Parkinson's disease. AGK7 protects against dopaminergic cell death both in vitro and in a Drosophila model of Parkinson's disease.

Sirt2-IN-5 is a potent SIRT2 inhibtor.

DK1-04 is a potent, selective, cell-permeable small-molecule SIRT5 inhibitor with IC50 of 0.34 uM, shows no inhibition on SIRT1-3/6 at 83 uM.

DK1-04e (DK1-04 prodrug) is the prodrug of DK1-04, a potent, selective, and cell-permeable small-molecule SIRT5 inhibitor with IC50 of 0.34 uM; DK1-04e inhibits the cellular growth of breast cancer cells by targeting SIRT5. DK1-04e impairs mammary tumor growth in MMTV-PyMT transgenic mice and human breast cancer mouse model. SIRT5 inhibition suppressed the transformed properties of cultured breast cancer cells and significantly reduced mammary tumor growth in vivo, in both genetically engineered and xenotransplant mouse models.

NH4-13 is a potent, SIRT2-selective inhibitor with IC50 of 87 nM, no inhibition against SIRT1/3/5/6 (CI50>50 uM).NH4-13 (30 mg/kg) significantly impaired tumor growth in HCT-116 tumor xenograft.

NH4-6 is a potent, selective pan SIRT1-3 inhibitor with IC50 of 3.0/0.032/2.3 uM for SIRT1/2/3, respectively.NH4-6 does not inhibits SIRT5 and SIRT6.NH4-6 (30 mg/kg) significantly impaired tumor growth in HCT-116 tumor xenograft.