Maribavir(GW257406X; BW1263W94; 1263W94) inhibits HCMV replication is by inhibition of an HCMV encoded protein kinase enzyme called UL97 or pUL97.

Marimastat is a broad spectrum MMP inhibitor and selective TACE inhibitor

Marinopyrrole A (Maritoclax) is a selective Mcl-1 antagonist. It binds to Mcl-1, but not Bcl-XL, and targets Mcl-1 for proteasomal degradation. Maritoclax disrupts the interaction between Bim and Mcl-1 with an IC50 of 10.1 μM.

Maropitant citrate (Cerenia) is a selective neurokinin 1 receptor (NK1) antagonist for prevention of vomiting due to motion sickness in dogs..

Maropitant is a neurokinin (NK1) receptor antagonist.

MARPIN is a novel ATR-Chk1 pathway inhibitor that inhibits hydroxyurea (HU)-induced phosphorylation of Ser345 on Chk1 with IC50 of 7.7 uM.

Masitinib is a broad coronavirus 3CL inhibitor that effectively blocks replication of SARS-CoV-2. Science 20 Jul 2021: eabg5827 DOI: 10.1126/science.abg5827

MB-07811 (VK-2809) is an orally bioavailable, liver-targeted prodrug of MB07344, which is a thyroid hormone receptor-beta agonist (TRβ) agonist, efficiently converted to MB07344 by liver microsomes in vivo.

MB710 is a small-molecule p53 mutant Y220C stabilizer, binds tightly to the Y220C pocket and stabilizes p53-Y220C in vitro..

MB725 is a small-molecule p53 mutant Y220C stabilizer, induces selective viability reduction in several p53-Y220C cancer cell lines (Huh7 cell IC50=10 uM).

MBQ-167 is a dual Rac/Cdc42 inhibitor, with IC50s of 103 nM for Rac 1/2/3 and 78 nM for Cdc42 in MDA-MB-231 cells, respectively.

MC-1575 is a potent and selective class IIa HDAC inhibitor with IC50 of 440 nM for maize HD1-A, displays >70-fold selectivity over HD1-B.

MC2884 is a novel hybrid, dual HAT/EZH2 inhibitor with IC50 of 3.27, 8.35 and 4.56 uM for CBP, KAT5 and p300, respectively.

Mca-DEVDAPK(Dnp)-OH is a substrate for caspase-3.

Mca-PL is a fluorogenic peptide that has been used as a building block in the synthesis of Mca-PLGL-Dpa-AR-NH2, a fluorogenic substrate for matrix metalloproteinase-2 (MMP-2) and MMP-7.

MCB-613 is a novel and potent stimulator of p160 steroid receptor coactivators (SRCs). It is a Pan-SRCs stimulator.

Netoglitazone, also known as isaglitazone and MCC-555, is an agent belonging to the glitazone class of antidiabetic agents with antihyperglycemic activity. Netoglitazone exerts both peroxisome proliferator-activated receptor (PPAR) alpha and gamma agonist activity. Netoglitazone decreases bone formation and increases marrow adipocyte formation in vivo.MCC 555 (Isaglitazone.

MCL0129 is a selective, potent melanocortin-4 receptor (MC4R) antagonist with Ki of 7.9 nM, without affinity for MC1 and MC3.

Mcl1-IN-2 is an Mcl-1 inhibitor without a reported IC50 value..

Mcl-1-Puma inhibitor 8 is a small-molecule dual-acting compound that targets the apoptotic Mcl-1-PUMA interface with Ki of 0.3 uM (Mcl-1, FPA), reduces multiple cancer cells and inhibits PUMA-mediated apoptosis.

MCOPPB 3Hcl is a nociceptin receptor agonist with pKi of 10.07; weaker activity at other opioid receptors.

MCP110 is a potent Ras/Raf-1 interaction inhibitor.