Losartan is a potent, non peptide antagonist of the angiotensin II receptor type 1. This receptor initiates a signal cascade that causes vasoconstriction. Antagonism of this receptor in turn causes vasodilation by blocking the signal from angiotensin II.

Losartan is an angiotensin II receptor antagonist, competes with the binding of angiotensin II to AT1 receptors with IC50 of 20 nM.

Losmapimod (GW856553X) is a selective, potent, and orally active p38 MAPK inhibitor with pKi of 8.1 and 7.6 for p38α and p38β, respectively. Phase 3.

Loteprednol etabonate

LOXO-101 is a small molecule that was designed to block the ATP binding site of the TRK family of receptors, with 2 to 20 nM cellular potency against the TRKA, TRKB, and TRKC kinases.

LOXO-195 is a next-generation TRK kinase (TKI) inhibitor, with IC50s of 0.6±0.1 nM, <2.5 nM for TRKA and TRKC respectively.

ORY-1001 dihydrochloride (RG-6016, Ladademstat) is a highly potent, selective inhibitor of lysine-specific demethylase KDM1A (LSD1) with IC50 of 18 nM, displays high selectivity for KDM1A over other FAD-containing monoamine oxidases.

LSZ102 is a potent, orally bioavailable Selective Estrogen Receptor Degrader (SERD) for the Treatment of Estrogen Receptor Positive Breast Cancer.

This product is discontinued. LTX-315 (Oncopore) is a synthetic 9-mer anticancer peptide that preferentially permeabilizes mitochondrial membranes, thereby causing partially BAX/BAK1-regulated, caspase-independent necrosis.

Lumateperone Tosylate is a 5-HT2A receptor antagonist (Ki = 0.54 nM), a partial agonist of presynaptic D2 receptors and an antagonist of postsynaptic D2 receptors (Ki = 32 nM), and a SERT blocker (Ki = 61 nM).

Lusutrombopag（S-888711） is an orally bioavailable, small molecule thrombopoietin (TPO) receptor agonist being developed by Shionogi for chronic liver disease (CLD) patients with thrombocytopenia prior to elective invasive surgery.

LX1606 is an orally bioavailable, small-molecule, tryptophan hydroxylase (TPH) inhibitor with potential antiserotonergic activity.

LX2761 is a locally acting SGLT1 inhibitor that is highly potent in vitro and delays intestinal glucose absorption in vivo to improve glycemic control.

LX-4211 is a potent dual SGLT2/1 inhibitor; Antidiabetic agents.

LXH254 is a potent CRAF inhibitor extracted from patent WO2018051306A1, Compound A. LXH254 also is a potent BRAF inhibitor.

LXR-623 is a novel Liver X Receptor modulator

LY2157299 is a potent TGFβ receptor I (TβRI) inhibitor with IC50 of 56 nM. Phase 2.

LY2228820 is a novel and potent p38MAPK inhibitor (the IC50 for p38αMAPK and p38βMAPK were 7 nM and 3 nM, respectively).

LY2510924 is an inhibitor of CXC chemokine receptor 4 (CXCR4), with potential antineoplastic activity.

LY-2584702 is an orally available inhibitor of p70S6K signaling; inhibits p70S6K and prevents phosphorylation of the S6 subunit of ribosomes.

LY2603618(IC-83) is a potent and selective small molecule inhibitor of Chk1 protein kinase activity in vitro (IC50=7 nM) and the first selective Chk1 inhibitor to enter clinical cancer trials.

LY2606368 2Hcl is a potent and selective ATP competitive inhibitor(IC50=1.5 nM in SW1990 cell) of the Chk1 protein kinase.