L-797591 hydrochloride is a selective sst1 agonist. L-797591 hydrochloride mimicks the effects of SRIF-14 and SRIF-28 by potently inhibiting either Forskolin-stimulated or CRH-stimulated cAMP accumulation.

L-652343 is a dual cyclooxygenase/lipoxygenase inhibitor. L-652343 can inhibit the production of LTB4 in isolated human polymorphonuclear leukocytes treated with Calcimycin (IC50: 1.4 μM), but it is inactive in whole blood. L-652343 can be used in the research of inflammatory and immune diseases.

L-4-Aminoarabinose-bactoprenyl phosphate (L-4-Aminoarabinose-BP) is a substrate of the ArnT enzyme and participates in lipid A modification through covalent bonding. L-4-Aminoarabinose-bactoprenyl phosphate transfers L-4-aminoarabinose (Ara4N) to the lipid A portion of lipopolysaccharide (LPS), mediating cationic modification of lipid A, thereby conferring resistance to cationic antimicrobial peptides (CAMPs) in Gram-negative bacteria. L-4-Aminoarabinose-bactoprenyl phosphate is an endogenous intermediate synthesized in vivo by a series of enzymes such as ArnC and ArnD encoded by the arn operon in Gram-negative bacteria such as Escherichia coli.

L-367773 is an orally active, selective oxytocin receptor antagonist, with Ki values of 26 nM and 61 nM for rat uterine oxytocin receptor and human uterine oxytocin receptor, respectively. L-367773 inhibits Oxytocin-stimulated uterine contractions.

L-163958 is an efficient, orally active, balanced angiotensin II receptor (AII receptor) antagonist. L-163958 has balanced high affinity for AT1 and AT2, with its IC50 values being 0.16, 0.12, 0.50, and 0.64 nM in rabbit aorta (AT1), rat midbrain (AT2), human adrenal gland (AT1), and human adrenal gland (AT2), respectively. L-163958 has a strong inhibitory effect on the pressor activity in rats. L-163958 can be used for the study of hypertension and related cardiovascular diseases.

KY0418 is a selective GPX4 inhibitor. KY0418 selectively and covalently modifies the selenocysteine residue of GPX4 and inhibits GPX4 activity. KY0418 induces ferroptosis and suppresses cell proliferation. KY0418 can be used for the study of ferroptosis and cancer.

KW-2170 hydrochloride is an alkylating agent and topoisomerase II inhibitor. KW-2170 hydrochloride stabilizes the topoisomerase II-DNA complex, causing DNA double-strand breaks, thereby preventing DNA replication and transcription, and ultimately leading to the death of tumor cells. KW-2170 hydrochloride exhibits potent and broad-spectrum anti-tumor activity in various mouse and human tumor models. KW-2170 hydrochloride can be used in the research of solid tumors.

Kv7.2/Kv7.3 modulator-3 (example 40 peak-1) is a selective Kv7.2/Kv7.3 modulator with an EC50 of 0.099 μM.

KV1.3-IN-2 hydrochloride is a kv1.3 potassium channel inhibitor without affecting hERG channel activity. KV1.3-IN-2 hydrochloride can be used in research of immune-related diseases such as psoriasis, rheumatoid arthritis, and systemic lupus erythematosus.

KTT-1 is a kinetically selective and orally active HDAC2 inhibitor. KTT-1 exhibits high HDAC2-selectivity over HDAC1. KTT-1 inhibits osteoclast differentiation at an early stage by downregulating c-Fos expression. KTT-1 effectively suppresses arthritis symptoms in the collagen-induced arthritis (CIA) mouse model. KTT-1 can be used for the research of rheumatoid arthritis and neurodegenerative diseases.

KT-474 (KYM-001; PROTAC IRAK4 degrader-7) hydrochloride is an orally active PROTAC IRAK4 degrader with anti-tumor effects. KT-474 inhibits the cell cycle and induces apoptosis. KT-474 induces tumor regression in a xenograft model of MYD88-mutated ABC DLBCL. KT-474 is a click chemistry reagent, containing an alkyne group, which can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing azide groups.

KSP-IN-2 (compound 12) is a kinesin spindle protein (KSP) inhibitor with an IC50 of 450 nM.

KSP-1007 is a bicyclic boronate-based broad-spectrum β-lactamase inhibitor. KSP-1007 can effectively inhibit class A, B, C and D β-lactamases, including serine-type, metallo-type (such as NDM, VIM, IMP) and Acinetobacter baumannii OXA-type enzymes. KSP-1007 can enhance the antibacterial activity of Meropenem, reduce its MIC value, and be effective against carbapenemase-producing Enterobacteriaceae, Acinetobacter baumannii, and Pseudomonas aeruginosa. KSP-1007 can be used for the research of bacterial infection.

KS 501 is a potent and selective calmodulin inhibitor. KS 501 inhibits the activation of calmodulin kinase I and II, but has less effect against cyclic adenosine 3’,5’-monophosphate (cyclic AMP)-sensitive kinase. KS 501 inhibits the enzyme through interfering with calmodulin activation rather than through a direct effect on the enzyme. KS 501 can be used for the study of leukemia.

KRP-203 monophosphate is a monophosphate of KRP-203. KRP-203 is an orally active sphingosine-1-phosphate receptor (S1PR) modulator that blocks the signal required by T cells to egress from lymph nodes and other lymphoid organs.

KRAS-IN-54 is a macrocyclic KRAS inhibitor. KRAS-IN-54 exhibits activity against cell viability and pERK inhibition in cells with KRASG12D and KRASG13D mutations. KRAS-IN-54 can be used in the research of KRAS-mutant cancers, including pancreatic adenocarcinoma, colorectal cancer, non-small cell lung cancer, esophageal cancer, gallbladder cancer, melanoma, ovarian cancer and endometrial cancer.

KRAS-IN-51 (Compound 597a) is a KRas G12V inhibitor, with its IC50 for KRas G12V being 2.9 nM; KD values are 17 (at 20°C) and 68 (at 37°C) nM. KRAS-IN-51 inhibits the phosphorylation of pERK. KRAS-IN-51 has anti-proliferative activity against SW620 and MIAPaCa-2. KRAS-IN-51 can be used for research on colorectal cancer and pancreatic cancer.

KRAS-IN-48 free base (Compound 1-01) is a mutant KRAS inhibitor, with Kd values of 2.58 nM and 5.49 μM for KRAS G12D and KRAS G12V, respectively. KRAS-IN-48 free base affects pERK expression in cells harboring KRAS G12D and KRAS G12V mutations, with IC50 values of 1.1 μM and 1.51 μM, respectively. KRAS-IN-48 free base can be used in the research of cancer.

KRAS-IN-48 (Compound 1-01) is a KRAS mutant inhibitor, with Kd values of 2.58 nM and 5.49 μM for KRAS-G12D and KRAS-G12V, respectively. KRAS-IN-48 can be used in the research of cancer.

EED-IN-5 is an orally active, EZH2-selective trisubstituted pyridine-based EED-H3K27me3 inhibitor and immunomodulator with anti-inflammatory activity. The IC50 value of EED-IN-5 against EED is 28.21 nM. In mouse models, EED-IN-5 preferentially and persistently accumulates in lymph nodes after oral administration. By reducing the H3K27me3 level of dendritic cells and inhibiting their migration, EED-IN-5 decreases the infiltration of specific dendritic cells, macrophages and T cells into the spinal cord and brain. EED-IN-5 exhibits hERG inhibitory activity, shows negative results in the Mini-Ames test, and causes no obvious toxicity upon long-term high-dose administration. EED-IN-5 can be used for the research of multiple sclerosis.

KRASG12C IN-18 is an orally active covalent KRASG12C inhibitor that achieves complete covalent engagement of KRASG12C in both GDP- and GMPPNP-bound states and displays strong antiproliferative activity against KRASG12C and resistance-associated variants, including KRASG12C/R68S, with low-nanomolar IC50 values. KRASG12C IN-18 exhibits marked in vivo efficacy in KRASG12C-driven solid tumor and KRASG12C/R68S xenograft models and can be used for colorectal cancer research.

KRASG12C IN-17 is an orally active covalent KRASG12C inhibitor, showing strong inhibitory activity in KRASG12C-mutant cancer cells (NCI-H23 IC50 = 0.7 nM; NCI-H358 IC50 = 0.5 nM). KRASG12C IN-17 covalently and irreversibly binds to KRASG12C with > 96% modification efficiency in both GDP-bound and GMPPNP-bound conformations. KRASG12C IN-17 can be used for studies of KRAS-driven cancers, including colorectal cancer.

KRASG12C IN-19 is a selective and orally active KRASG12C inhibitor. KRASG12C IN-19 exerts potent antiproliferative activity against the KRASG12C-mutant non small cell lung cancer (NSCLC) cell line H358 with an IC50 of 7.6 nM, and effectively suppresses downstream ERK phosphorylation (IC50 = 24.06 nM). KRASG12C IN 19 has no significant inhibitory activity against KRASG12V and KRASG12D-mutant cancer cells (PANC 1, Panc, AsPC 1, and GP2d cells) with IC50 > 10,000 nM. KRASG12C IN-19 rapidly forms a covalent bond with KRASG12V-GDP, leading to dose-dependent inhibition of the downstream KRAS pathway. KRASG12C IN 19 can be employed for research in KRASG12C driven cancers, including non small cell lung cancer, pancreatic cancer, and colorectal cancer.

KRAS G12D-IN-34 (Compound 13) is a KRAS (G12D) inhibitor with IC50 values for KRAS (G12D) and KRAS (WT) of 1.05 nM and 1.59 μM respectively. KRAS G12D-IN-34 can be used for research on non-small cell lung cancer.

KRAS G12C-IN-78 is a selective SWII-binding KRASG12C dual inhibitor targeting both inactive and active states. KRAS G12C-IN-78 rapidly inhibits ERK1/2 phosphorylation, induces covalent adduct formation with endogenous KRASG12C, suppresses MAPK pathway gene expression, and inhibits cellular proliferation in KRASG12C mutant cells. KRAS G12C-IN-78 can be used for the research of KRASG12C mutant solid tumors, including pancreatic ductal adenocarcinoma and non-small cell lung cancer.

KRAS G12C-IN-75 is an orally active, blood-brain barrier penetrant KRASG12C inhibitor with an IC50 of 0.53 nM. KRAS G12C-IN-75 attenuates active transport mediated by P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP). KRAS G12C-IN-75 inhibits tumor growth, regulates the expression of downstream MAPK target genes DUSP6 and SPRY4, and exhibits dose-dependent KRASG12C alkylation in KRASG12C-positive xenograft models. KRAS G12C-IN-75 can be used for research related to non-small cell lung cancer.

KRAS G12C-IN-74 is an orally active, selective KRASG12C inhibitor with a target IC50 of 43.18 nM. KRAS G12C-IN-74 induces G0/G1 cell cycle arrest and apoptosis in KRASG12C-mutant cancer cells. KRAS G12C-IN-74 is applicable for the research of KRASG12C-mutant pancreatic cancer, colorectal cancer and lung cancer.

KP-1212 is a nucleoside. KP-1212 exerts its antiviral effect by mutagenizing the viral genome. KP-1212 inhibits HIV growth.

Kojic amine is an orally active γ-aminobutyric acid (GABA) analog. Kojic amine acts as a GABA mimic that inhibits sodium-independent [3H]GABA binding to rat brain cell membranes. Kojic amine reduces flexor spasms in chronic spinal rat and cat models. Kojic amine prevents tonic extensor convulsions in mice. Kojic amine produces a transient, dose-dependent analgesic effect in the mouse hot-plate test. Kojic amine can be used in research related to skeletal muscle spasm, epilepsy and analgesia[1][2]

Knoxiadin (Compound 4) is an anthraquinone found in the roots of Knoxia valerianoides.