MS40 is a WDR5 PROTAC degrader (Kd = 125 nM). MS40 promotes the ubiquitination and degradation of WDR5. MS40-induced WDR5 degradation leads to the dissociation of the MLL/KMT2A complex from chromatin, resulting in decreased H3K4me2 levels. MS40 can be used in the study of primary leukemia.

MS2928 is a selective SETD8 inhibitor with an IC50 of 0.14 μM against SETD8 methyltransferase activity. MS2928 reduces cellular H4K20me1 levels and inhibits proliferation of SETD8-overexpressing multiple myeloma cells. MS2928 inhibits tumor growth in xenograft mouse models of SETD8-overexpressing multiple myeloma. MS2928 can be used for the study of SETD8 biological functions and multiple myeloma.

MS115 TFA is a selective PRMT5/MEP50 PROTAC degrader, with DC50 values of 17.4 nM and 11.3 nM for PRMT5 and MEP50 at 24 h in MDAMB468 cells, respectively. MS115 TFA inhibits the proliferation of breast cancer cells.

MS 857 is an orally active nonglycoside and nonsympathomimetic cardiotonic agent. MS 857 exhibits cardiac and coronary vasodilator effect.

MRS8431 is an ABCG2 inhibitor with a IC50 of 160 nM against human ABCG2. MRS8432 partially inhibits ABCG2-mediated substrate transport. MRS8432 is applicable to research related to cancer multidrug resistance.

MRS2339 is a ribose-modified nucleotide and a nucleotidase-resistant P2 receptor agonist. MRS2339 activates P2X4R in cardiomyocytes. MRS2339 induces ionic currents via cardiomyocyte P2X receptors, reduces cardiomyocyte cross-sectional area and heart weight/body weight ratio, lacks vasodilatory activity, and extends the lifespan of mice with cardiomyopathy. MRS2339 can be used in research related to heart failure and cardiomyopathy.

MrgprX2 antagonist-9 (compound 10) is a potent Mas-related G protein-coupled receptor X2 (MrgprX2) antagonist with an IC50 value of 0.1-100 nM. MrgprX2 antagonist-9 has the potential for the research of inflammatory.

MrgprX2 antagonist-10 (Example 218) is a MrgprX2 antagonist with an IC50 of less than 100 nM. MrgprX2 antagonist-10 can be used for the study of various inflammatory diseases.

MR1-114 is an orally active SARS-CoV-2 papain-like protease (PLpro) inhibitor with an IC50 of 0.037 μM. As a broad-spectrum inhibitor, MR1-114 maintains submicromolar activity against SARS-CoV-2 Delta, Omicron B.1.1.529 and Omicron BA.5 variants, with EC50 values of 0.18 μM, 0.39 μM and 0.20 μM, respectively. MR1-114 can be used for the research of coronavirus disease 2019 (SARS-CoV-2 infection).

MPXV p37 protein-IN-1 is a potent and orally active inhibitor of monkeypox virus (MPXV) p37 protein. MPXV p37 protein-IN-1 exhibits potent antivial activity against MPXV with an EC50 of 12.14 nM, with low cytotoxicity (CC50 = 304.63 μM). MPXV p37 protein-IN-1 demonstrates low toxicity and good tolerability in mice. MPXV p37 protein-IN-1 can be used for the research of anti-MPXV.

MPO-IN-10 is an orally active, selective, and irreversible inhibitor of myeloperoxidase (MPO), with an IC50 of 0.080 μM against human MPO. MPO-IN-10 exhibits higher selectivity for extracellular MPO over intracellular (neutrophil) MPO. MPO-IN-10 can be used in the study of inflammatory diseases such as vascular disorders.

mPEG-DLG (MW 2000) is a PEG-based lipid that can be used to formulate lipid nanoparticles for drug delivery.

MPAM-15 is a blood-brain barrier-penetrant pan-orthosteric allosteric modulator (PAM) of opioid receptors, with ≥16-fold selectivity for μOR over δOR and κOR. MPAM-15 acts as an anti-nociceptive potentiator and analgesic, and its activity is observed in mouse models via both intracerebroventricular and intraperitoneal administration. MPAM-15 is applicable for pain-related research.

MOR antagonist 2 hydrochloride is a blood-brain barrier-permeable μ-opioid receptor (MOR) antagonist, with an IC50 of 28.37 nM, an EC50 of 4.25 nM, and a Ki of 0.18 nM against MOR. MOR antagonist 2 hydrochloride stabilizes the inactive conformation of MOR to reduce receptor activation levels. MOR antagonist 2 hydrochloride antagonizes analgesic effects in the mouse warm-water tail-flick test. MOR antagonist 2 hydrochloride induces fewer opioid withdrawal symptoms (wet dog shakes, paw tremors) in mice with opioid withdrawal symptoms. MOR antagonist 2 hydrochloride can be used for the research of opioid use disorder.

MOR agonist-5 is a selective and potent mu-opioid receptor (MOR) agonist with an EC50 of 0.25 nM. MOR agonist-5 shows an EC50 of 10 nM for DOR and >10000 nM for KOR and NOR. MOR agonist-5 exerts significant antinociceptive activity. MOR agonist-5 can be used for the research of pain.

Mps1/TTK-IN-1 (Compound cpd-5), a derivative of NMS-P715, is a Mps1 kinase inhibitor with an IC50 of 9.2 nM and a Kd of 1.6 nM. Mps1/TTK-IN-1 specifically targets the ATP-binding pocket of the Mps1 kinase. Mps1/TTK-IN-1 maintains inhibitory activity against Mps1 drug-resistant mutants (C604Y, C604W) with IC50 values of 170 and 19 nM and Kd values of 471 and 349 nM. Mps1/TTK-IN-1 can block the phosphorylation of kinetochore protein KNL1 mediated by Mps1, interfere with the spindle assembly checkpoint function, prevent the correct separation of chromosomes, and thereby inhibit the mitosis and proliferation of tumor cells.

N6-Hydroxynorvalylcarbamoyladenosine (hn6A) (compound 1) is a nucleoside discovered in unfractionated tRNA from Thermodesulfobacterium commune. N6-Hydroxynorvalylcarbamoyladenosine is a modified nucleoside.

Montanastatin is an antitumor agent that can be isolated from the terrestrial actinomycete Streptomyces anulatus. Montanastatin inhibits the growth of various cancer cells. Montanastatin can be used in research related to lymphocytic leukemia, ovarian cancer, brain cancer, renal cancer, lung cancer, colon cancer and melanoma.

Mono-13(Z),16(Z)-docosadienoin is an acylglycerol.

MNK/PIM-IN-2 is a Mnk/Pim kinase inhibitor with an IC50 of 32 nM for Mnk1, 3 nM for Mnk2, and 37 nM for Pim1. MNK/PIM-IN-2 reduces the levels of p-eIF4E and p-4EBP1. MNK/PIM-IN-2 induces cell cycle arrest, apoptosis (apoptosis) and exerts antiproliferative effects in leukemia cells. MNK/PIM-IN-2 can be used in studies related to leukemia.

MNA 279 (X 910279) is an orally active, immunosuppressive malononitrilamide and A 771726 derivative. MNA 279 suppresses IgM and IgG antibody production. MNA 279 prevents the development of systemic lupus erythematosus (SLE)-like disease in mice. MNA 279 prolongs skin xenograft survival in a mouse-to-rat model.

MN-05 is a dual neuroprotective and vasodilatory NMDA receptor inhibitor.MN-05 blocks calcium influx, reduces free radical production, and maintains mitochondrial membrane potential in cortical neurons exposed to glutamate.MN-05 dilates aortic rings against phenylephrine-induced contraction.MN-05 protects neurons against glutamate-induced injury in vitro.MN-05 can be used for the research of neurodegenerative diseases.

MMP-9-IN-13 (Example 1) is a selective inhibitor of human MMP9 with an IC50 value of 0.02 nM. MMP-9-IN-13 can be used in the research of ocular surface.

MLS-2384 free base is a dual JAK/Src kinase inhibitor. MLS-2384 free base downregulates STAT3 downstream proteins c-Myc and Mcl-1. MLS-2384 free base induces Apoptosis. MLS-2384 free base exhibits anticancer activity against prostate cancer, breast cancer, skin cancer, ovarian cancer, lung cancer, and liver cancer.

MLL1-IN-1 is an orally active MLL1 inhibitor with an IC50 of 0.043 μM. MLL1-IN-1 induces Menin protein degradation and inhibits the proliferation of leukemia cells. MLL1-IN-1 can induce tumor regression in leukemia-bearing mice. MLL1-IN-1 is useful for research into MLL1-associated leukemia.

ML279 is a potent scavenger receptor, class B, type I (SR-BI) inhibitor. ML279 can inhibit SR-BI-mediated lipid uptake by stabilizing the binding of HDL to SR-BI (EC50 = 0.27 μM). ML279 can be used for the researches of infection and cardiovascular disease, such as atherosclerosis and HCV infection.

ML133 is a selective Kir2 family channels inhibitor, with an IC50 of 1.8 μM at pH 7.4 and 290 nM at pH 8.5.

MKK7-JNK activator 1 (Compound 10) is a MKK7-JNK pathway activator. MKK7-JNK activator 1 effectively inhibits the proliferation and migration of MDA-MB-468 cells, induces G2/M phase arrest and caspase -dependent apoptosis (independent of ROS production). MKK7-JNK activator 1 significantly increases the levels of p-MKK7 and p-JNK, but does not affect p-ERK or p-p38. MKK7-JNK activator 1 can be used for the study of triple-negative breast cancer (TNBC).

MKI-3 is a selective microtubule-associated serine/threonine kinase-like (MASTL) inhibitor with an IC50 of 5.72 nM and a Kd of 1.89 nM. MKI-3 disrupts the MASTL-ENSA-Aurora A signaling axis. MKI-3 induces chromosomal instability, mitotic catastrophe and apoptosis (apoptosis) in cancer cells. MKI-3 is applicable to research related to triple-negative breast cancer.

MKI-2 is a selective MASTL inhibitor with an IC50 of 37.44 nM. MKI-2 induces mitotic catastrophe resulting from the modulation of the MASTL-PP2A axis in breast cancer cells. MKI-2 reduces phospho-ENSA, total, phospho-c-Myc levels. MKI-2 inhibts cancer cells proliferation, migration and induces DNA damage. MKI-2 inhibits germinal vesicle breakdown in mouse oocytes. MKI-2 can be used for the research of cancer, such as breast cancer.