Lopinavir is a potent HIV protease inhibitor with Ki of 1.3 pM,showed potent activity against COVID-19(SARS-COV-2).

Lonafarnib(Sch66336) is an orally bioavailable FPTase inhibitor for H-ras, K-ras-4B and N-ras with IC50 of 1.9 nM, 5.2 nM and 2.8 nM, respectively.

Lomitapide (AEGR-733) is a novel proprietary MTP-inhibitor.

Lodoxamide is an antiallergic compound acting as a mast-cell stabilizer for the treatment of asthma and allergic conjunctivitis.

LMK-235 is a selective histone deacetylase (HDAC) 4 and HDAC5 inhibitor (IC50 values are 4.22, 11.9, 55.7, 320, 852, 881, and 1278 nM for HDAC 5, 4, 6, 1, 11, 2, and 8, respectively).

LM22B-10 is an activator of TrkB/TrkC neurotrophin receptor, and can induce TrkB, TrkC, AKT and ERK activation in vitro and in vivo.

LLY-507 is a chemical probe for SMYD2 (a protein lysine methyltransferase).

LJI308 is a selective and potent RSK inhibitor.

LJH685 is a selective and potent RSK inhibitor.

Liproxstatin-1 is able to suppress ferroptosis in cells, in Gpx4(-/-) mice, and in a pre-clinical model of ischaemia/reperfusion-induced hepatic damage.

Linezolid (Zyvox) is a synthetic antibiotic used for the treatment of serious infections.

LH846 is a selective inhibitor of CK1δ (IC50 values are 290 nM, 1.3 uM and 2.5 uM for CK1δ, ε and α); displays no inhibitory activity at CK2.

LGX818 is an orally available mutated BRaf V600E inhibitor(IC50=0.3 nM) with potential antineoplastic activity.

LGK-974 is a potent and specific PORCN inhibitor, and inhibits Wnt signaling with IC50 of 0.4 nM.

Levobetaxolol hydrochloride is a beta-adrenergic receptor inhibitor (beta blocker), used to lower the pressure in the eye in treating conditions such as glaucoma.

Lesinurad(RDEA594), once-daily inhibitor of URAT1, is a transporter in the kidney that regulates uric acid excretion from the body.

Lercanidipine hydrochloride is a calcium channel blocker of the dihydropyridine class.

LEE011 is an orally available cyclin-dependent kinase (CDK) inhibitor targeting cyclin D1/CDK4 and cyclin D3/CDK6 cell cycle pathway, with potential antineoplastic activity.

Ledipasvir(GS5885) is an inhibitor of the hepatitis C virus NS5A protein. Ledipasvir is an experimental drug for the treatment of hepatitis C.

LDN-57444 is a reversible, competitive proteasome inhibitor for Uch-L1 with IC50 of 0.88 μM, 28-fold selectivity over isoform Uch-L3.

LDN-214117 is a potent and selective ALK2 inhibitor with IC50 of 22 nM; > 100 fold selectivity for ALK5; also inhibits BMP6(IC50=100 nM).

LDN-212854 is a potent and selective BMP receptor inhibitor with IC50 of 1.3 nM for ALK2, about 2-, 66-, 1641-, and 7135-fold selectivity over ALK1, ALK3, ALK4, and ALK5, respectively.

LDN-212320(OSU-0212320) is a glutamate transporter EAAT2 activator; enhances EAAT2 levels by > 6 fold at concentrations < 5 μM after 24 h.

LDN-192960 is a potent and selective inhibitor of haspin (Haploid Germ Cell-Specific Nuclear Protein Kinase). IC50 = 0.010 µm

LDK378 is a highly selective ALK inhibitor with IC50 of 2 nM

LDE225 (NVP-LDE225) is a Smoothened (Smo) antagonist, inhibiting Hedgehog (Hh) signaling with IC50 of 1.3 nM (mouse) and 2.5 nM (human), respectively. Phase 3.

LDC000067(LDC-067) is a highly specific CDK9 inhibitor with IC50 of 32.7 nM for CDK9/cyclin T1; displays 55/125/210/ >227/ >227-fold selectivity for CDK9 versus CDK2/1/4/6/7.

LCZ696 is a first-in-class dual inhibitor of the angiotensin II receptor(AT II receptor) and neprilysin; a novel single molecule comprising molecular moieties of valsartan and NEP inhibitor prodrug AHU377 (1:1 ratio).

LB-100 is a small-molecular protein phosphatase 2A(PP2A)inhibitor with IC50 of 0.85 μM and 3.87 μM in BxPc-3 and Panc-1 cells.

Lazertinib (YH25448, GNS-1480) is a highly potent, mutant-selective, irreversible, brain-penetrant and orally active EGFR tyrosine-kinase inhibitors for both the T790M mutation and activating EGFR mutations