L-Hexanoylcarnitine is an acylcarnitine and is found to be associated with celiac disease.

LHF-535 (LHF535, LHF 535) is a small-molecule viral entry inhibitor that targets the arenavirus envelope glycoprotein, exhibits potent antiviral activity against a broad array of hemorrhagic fever arenaviruses with IC50 of 0.1-0.3 nM.

L-Homocysteine thiolactone hydrochloride is an intramolecular thioester of homocysteine; prevents translational incorporation of homocysteine into proteins.

Licofelone is a dual COX/LOX inhibitor being considered as a treatment for osteoarthritis.

Lidocaine hydrochloride is a local anesthetic and cardiac depressant used as an antiarrhythmia agent.

Lifirafenib (BGB-283) potently inhibits RAF family kinases and EGFR activities in biochemical assays with IC50 values of 23, 29 and 495 nM for the recombinant BRAFV600E kinase domain, EGFR and EGFR T790M/L858R mutant.

Lifirafenib（BGB-283） is a Novel potent and selective RAF Kinase and EGFR inhibitor.

LIMK1 and 2 dual inhibitor is a potent, selective LIMK1/2 inhibitor with IC50 of <10 nM for both, 15-fold selectivity over B-Raf (IC50=10-100 nM).

LIN28 inhibitor LI71 is a potent, cell-permeable inhibitor of LIN28 that abolishes LIN28-mediated oligouridylation with IC50 of 7 uM, binds the cold shock domain to suppress LIN28's activity against let-7 in leukemia cells and embryonic stem cells. .

Lin28-IN-1 is a small-molecule inhibitor of the Lin28/let-7 interaction with IC50 of 4.03 uM.

Linopirdine (DUP-996) is a potent Kv7 (KCNQ) voltage-gated potassium channels blcoker.

Linopirdine (DUP-996.

Liproxstatin-1 analog is an analog of the ferroptosis inhibitor liproxstatin-1

Lirimilast (BAY 19-8004.

LIT-001 trifluoroacetate (LIT001) is the first nonpeptide Oxytocin receptor (OT-R) agonist with EC50 of 55 nM, Emax=96%.

Litronesib is a selective, allosteric inhibitor of Eg5, which may result in mitotic disruption, apoptosis and consequently cell death in tumor cells that are actively dividing.

Lixivaptan is a highly potent, non-peptide, oral capsule that works by reducing the action of a hormone (vasopressin) that blocks fluid excretion.

LJ 001 ((LJ-001, LJ001) is a broad-spectrum antiviral agent targeting entry of enveloped viruses, including influenza A, filoviruses, poxviruses, arenaviruses, bunyaviruses, paramyxoviruses, flaviviruses, and HIV-1; specifically intercalates into viral membranes, irreversibly inactivates virions while leaving functionally intact envelope proteins, and inhibits viral entry at a step after virus binding but before virus-cell fusion; specifically inhibits virus-cell but not cell-cell fusion

L-JNKI-1 is a cell-permeable peptide inhibitor specific for JNK.

LKY-047 is a decursin derivative that potently and selectively inhibits CYP2J2, competitively inhibits CYP2J2-mediated astemizole O-demethylase and terfenadine hydroxylase activity with Ki of 0.96 and 2.61 uM, respectively.

LLL3 is a structural analogue of STA-21 that acts as a novel STAT3 inhibitor, inhibits STAT3-dependent transcriptional and DNA binding activities.

LLP2A is a high-affinity, selective peptidomimetic ligand of α4β1 integrin with IC50 of 2 pM.