MDL-811 (MDL811) is a potent, selective and allosteric SIRT6 activator with EC50 of 5.7 uM (activated SIRT6 deacetylation), two-fold greater activity than MDL-800 (EC50=12.3 uM, Cat# 35760).

Novel activator of SIRT6 deacetylation

p-Toluic acid (4-Methylbenzoic acid) is a methylbenzoic acid and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc. It also exhibits hepatotoxicological potential in humanised-liver mice.

GSK3830052 is a novel DNMT1-selective inhibitor (IC50 = 0.11 ± 0.02 µM). In in vitro assays, compounds in this series, including GSK3830052, inhibit human DNMT1 activity selectively over DNMT3A/3B, produce robust DNA hypomethylation, and trigger transcriptional reactivation and anti‑proliferative effects in leukemia cell lines at low‑micromolar concentrations. In animal models, analogs of this series achieve significant tumor regression and survival benefit in acute myeloid leukemia xenografts with improved tolerability compared to decitabine, demonstrating dose‑dependent antitumor efficacy with reduced hematologic toxicity, although specific numeric IC₅₀/ED₅₀ values for GSK3830052 alone aren’t detailed in the open article.

FK565 is an immunoactive peptide and a nucleotide-binding oligomerization domain (Nod)-1 ligand agonist.

Novel Potent Agonist of the Orphan G Protein-Coupled Receptor GPR17 (EC 50 27.9 nM)

ADAMTS-5-IN-3 (Example 37-2) is a potent inhibitor of ADAMTS-5 and ADAMTS-4 with IC50s of 8 and 12 nM, respectively. ADAMTS-5-IN-3 can be used for the research of diseases involving degradation of cartilage or disruption of cartilage homeostasis, in particular osteoarthrosis and/or rheumatoid arthritis.

MS9024 is the degrader for DNA methyltransferase 1 that degrades DNMT1 in cell HCT116 through the ubiquitin-proteasome pathway with a DC50 of 35 nM (DC50 in MDA-MB-468 and H1299 is 254 nM and 101 nM). MS9024 also inhibits DNMT1 with an IC50 of 0.43 μM.

503O13 is a next-generation, biodegradable lipid nanoparticle (LNP) engineered for highly efficient and targeted siRNA delivery. Designed through rational structure-activity criteria—including optimal tail length (O13), tertiary amines, and a surface pKa ≥5.5—this single-component LNP achieves unparalleled gene silencing with an ultra-low EC50 of 0.01 mg/kg in preclinical models.503O13 outperforms non-degradable counterparts (e.g., C12-200) with improved toxicity profiles—no hepatic necrosis or pancreatic inflammation—while maintaining rapid blood clearance (t1/2: 6 min) and organ-specific accumulation (liver/spleen).

YSK 05 is a pH-sensitive cationic lipid. YSK 05 improves the intracellular trafficking of non-viral vectors. YSK 05-MEND shows significantly good gene silencing activity and hemolytic activity. YSK 05 overcomes the suppression of endosomal escape by PEGylation. YSK 05 effectively enhances siRNA delivery both in vitro and in vivo.

FTT5 is a lipid-like compound for efficient delivery of long mRNAs in vivo.

246C10 is a synthesized ionizable lipid. 246C10 can be formulated into lipid nanoparticles (LNPs) with dioleoylphosphatidylethanolamine (DOPE), cholesterol, and C16-PEG2000 ceramide (PEG-lipid) as well as mRNA. The lipid nanoparticle formulations can be used for mRNA delivery. To obtain iLNPs that could specifically target liver sinusoidal endothelial cells (LSECs), six different ionizable lipids (241C10 to 246C10) were synthesized by an epoxide ring-opening reaction with piperazine- or piperidine-containing amines. Biodistribution and gene regulation of various iLNPs were assessed in vivo, and the results showed that the 246C10 iLNPs (containing piperazine amine) had the highest luciferase expression in the liver. When further analyzing the 246C10 iLNPs transfection efficiency in different types of liver cells, it was found that tdTomato fluorescence was mainly concentrated in hepatocytes, not in LSECs. Figure 6f shows that 80% of hepatocytes are fluorescent, 40% of LSECs are fluorescent, and 20% of Kupffer cells are fluorescent. Due to the mannose receptor on LSECs, mannose-PEG lipid was introduced into 246C10 iLNPs to alter the distribution of iLNPs in different liver cells. As shown in Figure 6g, tdTomato fluorescence distribution was 15% of hepatocytes, 70% of LSECs, and 15% of Kupffer cells, significantly improved the ability of iLNPs to actively target LSECs. In contrast, this work indirectly shows that the iLNPs with piperazine head lipid are more able to deliver mRNA to the liver and translate the target protein than the iLNPs with piperidine head lipid. It is worth mentioning that the preparation buffer of 246C10 iLNPs could influence the encapsulation efficiency of mRNA. With the addition of sodium chloride in the citrate buffer, the encapsulation efficiency of CRISPR-Cas9 mRNA and sgRNA was increased. These iLNPs were able to treat hemophilia safely, without causing hepatotoxicity, the immune response induced by Cas9 and off-target editing.

98N12-5 is an ionizable cationic lipid. It has been used in combination with other lipids in the generation of lipid nanoparticles (LNPs). LNPs containing 98N12-5 and encapsulating proprotein convertase subtilisin kexin type 9 (PCSK9) siRNA selectively accumulate in the liver and reduce total serum cholesterol levels in mice and rats and serum LDL levels in cynomolgus monkeys.

MMG-11 quarterhydrate is a potent and selective human TLR2 antagonist with low cytotoxicity. MMG-11 quarterhydrate inhibits both TLR2/1 and TLR2/6 signaling with IC50s of 1.7?μM for Pam3CSK4-induced hTLR2/1 and 5.7?μM for Pam2CSK4-induced hTLR2/6 responses.

MMG-11 is a potent and selective dual inhibitor of TLR2/1 and TLR2/6 signaling with low cytotoxicity.

ISM5939 is an orally active and selective ENPP1 inhibitor with an IC50 of 0.63 nM for 2,3-cGAMP degradation and 9.28 nM for ATP hydrolysis. ISM5939 has antitumor activity.

Emupertinib (example 37) is a potent EGFR inhibitor with IC50 values of <0.3 nM, 0.52 nM, 0.5 nM, 0.69 nM and 0.92 nM for EGFR (d746-750/T790M/C779S), EGFR (L858R/T790M/C797S), EGFR (d746-750/C797S), EGFR (L858R/C797S), and EGFR (wild-type), respectively.

KVS0001 is a specific and bioavailable small molecule inhibitor of SMG1 kinase, disrupts nonsense mediated decay (NMD).

STING inhbiitor, which inhibited the activation of the STING signal pathway and to prevent or treat a STING-​mediated disease.

RO5126766(CH5126766) is a Raf/MEK dual kinase inhibitor.

GSK898 is a potent, highly selective kynurenine monooxygenase (KMO) inhibitor with pIC50 of 8.8.

CT-996 is an orally active GLP-1RA agonist, with an EC50 of 0.49 nM. CT-996 reduces the β-arrestin recruitment and GLP-1R internalization. CT-996 suppresses postprandial blood glucose following a mixed meal tolerance test (MMTT) in mice expressing the human GLP-1 receptor and enhances glucose stimulated insulin secretion (GSIS) during an intravenous glucose challenge in obese monkeys. CT-996 can be used for the study of type 2 diabetes (T2D) and obesity.

Selumetinib (AZD6244) is selective, non-ATP-competitive oral MEK1/2 inhibitor, with an IC50 of 14 nM for MEK1. Selumetinib (AZD6244) inhibits ERK1/2 phosphorylation.

Moxonidine (BDF5895) hydrochloride is an orally active imidazoline type 1 receptor (I1-R) agonist. Moxonidine hydrochloride activates imidazoline I1 receptors and α2 adrenoceptors, affecting oxidized low-density lipoprotein uptake. Moxonidine hydrochloride reduces atherosclerotic lesions and lowers blood pressure. Moxonidine hydrochloride can be used in the study of hypertension, heart failure, and atherosclerosis.

Mortaparib is a dual inhibitor of mortalin-PARP1 interaction, and a p53 activating cytotoxic compound, induces activation of growth arrest and apoptosis signaling in cancer cells in vitro and in vivo.

ZINC13000658 is a METTL inhibitor. ZINC13000658 exhibits significant anti proliferative activity in various cells and can induce G1 phase cell cycle arrest and apoptosis such as HepG2 (IC50 = 5.632 µM) and SNU-449 (IC50 = 6.184 µM) cells. ZINC13000658 may be related to the inhibition of the activity of multiple methyltransferases such as METTL1, 3, 6, 16, 18, etc. ZINC13000658 can be used for research on various types of cancer.

MKP10241 is an orally active GPR119 agonist. MKP10241 elevates cAMP levels in the GPR119 expressing cell line (EC50: 3.7 nM). MKP10241 reduces blood glucose levels and HbA1c in acute models and a chronic diabetic mouse model. MKP10241 also demonstrates excellent preclinical efficacy in acute as well as chronic rodent models of obesity, and MASH.

XL-3156 is a potent, selective, and cross-species cGAS inhibitor. XL-3156 can simultaneously occupy both allosteric and orthosteric sites, and inhibit the interaction and phase separation between cGAS and DNA by stabilizing the closed conformation of the activation loop. XL-3156 can be used in the research of autoimmune diseases, inflammatory conditions and other diseases.

Clozapine N-oxide is a major metabolite of Clozapine noted to decrease SR-2A (5-HT2 serotonin receptor) density in vitro.

SSCI-1 is a highly potent, selective NaV1.7 inhibitor with IC50 of 27 and 82 nM on human and rhesus Nav1.7 channels, respectively.SSCI-1 showed robust selectivity over other human and rhesus Nav channel paralogs, with the exception of Nav1.2 channels (IC50 252 nM for hNaV1.2), shows no other channels and receptors in 114 enzymatic, radioligand binding, and cellular assays.SSCI-1 also exhibits high potency in manual patch clamp experiments (IC50=66/295 nM for huma/rhesus Nav1.7 channels).SSCI-1 does not affect myelinated nerve excitability as measured by TT, SSCI-1 inhibits odorant-induced olfaction in the olfactory bulb of rhesus monkeys, measured by fMRI.SSCI-1 inhibits withdrawal responses to noxious heat in rhesus monkeys.