9-Phenanthrol (9-Hydroxyphenanthrene, Phenanthren-9-o, 9-Phenanthrenol) is a selective TRPM4 inhibitor with an IC50 in the range of 0.02 μM, without effects on TRPM5.

Dideoxyadenosine is konwn as 2′,3′-Dideoxyadenosine (ddA), a specific adenylyl cyclase inhibitor, is useful in biological process and pathway studies involving adenylyl cyclase activity and cAMP pool modulation.

Zinc acetate dihydrate (Acetic acid zinc salt dihydrate, Dicarbomethoxyzinc dihydrate) contributes to the antiviral activity of microbicide gel through zinc targeting the reverse transcriptase.

Magnesium chloride can reduce the activated thromboplastin times.

Polytetrafluoroethylene (PTFE) is a biomedical material and has excellent non-stick properties with an exceptionally low coefficient of friction.

Serratia marcescens nuclease is a nonspecific nuclease. Serratia marcescens nuclease has broad utility due to its potent digestive activity toward both DNA and RNA.

Glucose oxidase is used in the food and beverage industry as a preservative and stabilizer and is commonly derived from the fungus Aspergillus niger. Glucose oxidase can react with intracellular glucose and oxygen (O2) to produce hydrogen peroxide (H2O2) and gluconic acid, which can cut off the nutrition source of cancer cells and consequently inhibit their proliferation.

Clazosentan (Ro 61-1790) is a selective endothelin A (ETA) receptor antagonist. Clazosentan inhibits ET-1-mediated vasoconstriction. Clazosentan prevents cerebral vasospasm, vasospasm-related cerebral infarction.

Inhibitor of HSP90, leading to the degradation and depletion of its client proteins such as kinases and transcription factors involved with cell cycle regulation and signal transduction

Pyrimidine is an endogenous metabolite. It is used to study the photoinduced ion chemistry of the halogenated pyrimidines, a class of prototype radiosensitizing molecules, and is also used to assess pyrimidine/purine asymmetry quantitatively.

FL118(10,11-(Methylenedioxy)-20(S)-camptothecin), a Camptothecin analog, is a potent and orally active inhibitor of Survivin. FL118 also selectively and independently inhibits three additional cancer-associated survival genes Mcl-1, XIAP, and cIAP2 in a p53 status-independent manner. FL118 displays potent antitumor activity and can be used in cancer research.

Brivanib is an ATP-competitive inhibitor against human VEGFR2 and FGFR with IC50 of 25 nM and 148 nM, respectively.

HSGN-189 is a potent lipoteichoic acid (LTA) biosynthesis inhibitor, exhibits potent antibacterial activity against both MRSA and VRE strains with MICs of 1 ug/mL.

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.