LY335979 (Zosuquidar) is a potent modulator of P-glycoprotein-mediated multidrug resistance with Ki of 60 nM.

MAK683 is a novel PRC2/EED inhibitor.

Marimastat is a broad spectrum MMP inhibitor and selective TACE inhibitor

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

MDV3100 is an androgen-receptor (AR) antagonist with IC50 of 36 nM.

Melphalan(Sarcolysin; L-PAM) is a chemotherapy drug belonging to the class of nitrogen mustard alkylating agents; attaches the alkyl group to the guanine base of DNA.

Methazolastone (Temozolomide, Temodar, Temodal) is a DNA damage inducer.

Methoxsalen (Oxsoralen)

MGCD0103 (Mocetinostat) is a potent HDAC inhibitor with IC50 of 0.15, 0.29 and 1.66 μM for HDAC 1, HDAC 2 and HDAC 3, respectively.

MI-503 is a highly potent and orally bioavailable small molecule inhibitor of the menin-MLL interaction.

MI-77301 (SAR405838) is an orally available MDM2 antagonist with Ki of 0.88 nM. Phase 1.

Mivebresib is a novel BET family inhibitor, disrupts critical transcription programs that drive prostate cancer growth to induce potent anti-tumor activity in vitro and in vivo.

MK-1775 is a potent and selective Wee1 inhibitor with IC50 of 5.2 nM.

MK-2206 2HCl is a highly selective inhibitor of Akt1/2/3 with IC50 of 8 nM/12 nM/65 nM, respectively; no inhibitory activities against 250 other protein kinases observed. Phase 2.

MK-2461 is a potent, multi-targeted inhibitor for c-Met(WT/mutants) with IC50 of 0.4-2.5 nM, less potent to Ron, Flt1; 8- to 30-fold greater selectivity of c-Met targets versus FGFR1, FGFR2, FGFR3, PDGFRβ, KDR, Flt3, Flt4, TrkA, and TrkB.

MK-4101 is a potent SMO Inhibitor of the Hedgehog Pathway, highly active against Medulloblastoma and Basal Cell Carcinoma.

MK-4827 is an inhibitor of poly (ADP-ribose) polymerase (PARP) with potential antineoplastic activity.

MK-4827 is an inhibitor of poly (ADP-ribose) polymerase (PARP) with potential antineoplastic activity.

MK-4827(Niraparib) tosylate is a selective inhibitor of PARP1/PARP2 with IC50 of 3.8 nM/2.1 nM; with great activity in cancer cells with mutant BRCA-1 and BRCA-2; >330-fold selective against PARP3, V-PARP and Tank1.

MK-5108 (VX-689) is a highly selective Aurora A inhibitor with IC50 of 0.064 nM; 220- and 190-fold more selective for Aurora A than Aurora B/C.

ML264 is a novel small molecule inhibitor of Krüppel-like factor 5 (KLF5).

ML385 is a novel and specific NRF2 inhibitor.