KMN-159 is a potent prostaglandin E2 type 4 (EP4) receptor agonist with Ki of 0.38 nM and shows five fold increase in potency versus KMN-80.

KN-62 is a sective, cell-permeable inhibitor of CaM kinase II (IC50 = 0.9 μM).

KN-92 is an inactive derivative of KN-93. KN-93 is a selective inhibitor of Ca2+/calmodulin-dependent kinase II (CaMKII), competitively blocking CaM binding to the kinase (Ki = 370 nM).

KN-92 is an inactive derivative of KN-93. KN-93 is a selective inhibitor of Ca2+/calmodulin-dependent kinase II (CaMKII), competitively blocking CaM binding to the kinase (Ki = 370 nM).

KN-93 is a selective inhibitor of Ca2+/calmodulin-dependent kinase II (CaMKII), competitively blocking CaM binding to the kinase (Ki = 370 nM).

KNK437 is a pan-HSP inhibitor, which inhibits the synthesis of inducible HSPs, including HSP105, HSP72, and HSP40.

Ko 143 is a potent and selective breast cancer resistance protein multidrug transporter (BCRP) inhibitor (EC90 = 26 nM), Ko 143 displays > 200-fold selectivity over P-gp and MRP-1 transporters.

KO-947 is a small molecule inhibitor of extracellular-signal-regulated kinases 1 and 2 (ERK1/2), as a potential treatment for cancers in which the mitogen activated protein kinase (MAPK) pathway.

Kobe0065 is a novel and effective small-molecule compound inhibiting Ras–Raf interaction by SBDD; exhibits potent activity to competitively inhibit the binding of H-Ras·GTP to c-Raf-1 RBD with a Ki value of 46 ± 13 μM.

kobe2602 is a novel and effective small-molecule compound inhibiting Ras–Raf interaction by SBDD; exhibits potent activity to competitively inhibit the binding of H-Ras·GTP to c-Raf-1 RBD with a Ki value of 149 ± 55 μM.

Kojic acid is a natural substance produced by Aspergillus oryzae, also used as an anti-oxidant and radio-protective agent.

KP-457 is a selective a disintegrin and metalloproteinase 17 (ADAM17) inhibitor, with higher selectivity for ADAM17 than for other MMPs and ADAM10, and 5050s are 11.1 nM (ADAM17), 748 nM (ADAM10), 717 nM (MMP2), 9760 nM (MMP3), 2200 nM (MMP8), 5410 nM (MM

KPT-276, analog of KPT-185, is an orally bioavailable selective inhibitors of nuclear export (SINE) that irreversibly bind to CRM1 and block the function of CRM1.

KPT-330, analog of KPT-185, is an orally bioavailable selective CRM1 inhibitor.

KPT-6566 is a covalent PIN1 inhibitor selectively targets cancer cells by a dual mechanism of action.

KR-33494 is a fluorescent-tagged and biotin-tagged probe of a potent inhibitor for Fas-mediated cell death (FAF1), KR-33493.

K-Ras(G12C) inhibitor 12 is an allosteric inhibitor of oncogenic K-Ras(G12C).

K-Ras(G12C) inhibitor 9 is an allosteric inhibitor of oncogenic K-Ras(G12C).

K-Ras-IN-1 is a K-Ras inhibitor, by binding to K-Ras in a hydrophobic pocket that is occupied by Tyr-71 in the apo-Ras crystal structure.

KRCA-0008 is a potent Ack1 and anaplastic lymphoma kinase (ALK) dual inhibitor (IC50 values are 4 and 12 nM respectively).

KRIBB11 is a Heat shock factor (HSF) inhibitor (IC50 = 1.2 μM).

KRN633 is a potent and selective VEGFR inhibitor. which inhibits tyrosine phosphorylation of VEGFR-2 (IC50 = 1.16 nmol/L) in human umbilical vein endothelial cells.