directly

Erlotinib (NSC-718781) is an EGFR inhibitor (IC50: 2 nM). It is used for the treatment of non-small cell lung cancer.

ESI-05 (NSC-116966) is a specific EPAC2 (exchange protein directly activated by cAMP 2) antagonist (IC50: 0.4 μM). ESI-05 inhibits cAMP-mediated activation of EPAC2, as well as EAPC2, mediated Rap1 activation.

AZD-8055 is an orally bioavailable, highly selective, ATP-competitive mTOR kinase inhibitor that directly binds to the ATP-binding pocket of the mTOR kinase domain, while potently inhibiting both mTORC1 and mTORC2 complexes (IC₅₀ values of 0.8 nM and 0.1 nM, respectively). AZD-8055 is suitable for research in oncology, metabolic diseases, and fibrotic disorders.

Polyinosinic-polycytidylic acid (Poly(I:C)) is a synthetic double-stranded RNA (dsRNA) analog and an agonist of TLR3 as well as retinoic acid-inducible gene I (RIG-I) and melanoma differentiation-associated protein 5 (MDA5). It can induce innate immune responses in mammals and serve as a vaccine adjuvant to enhance both innate and adaptive immunity, while modulating the tumor microenvironment and directly inducing apoptosis in cancer cells. Poly(I:C) is commonly used to establish acute respiratory distress syndrome (ARDS) animal models for studying immune responses and disease mechanisms.

Cytochalasin D is an actin inhibitor, the removal of actin stress fibers is crucial for the chondrogenic differentiation. It may be an inhibitor of some fertilization processes such as sperm penetration or sperm head decondensation. Cytochalasin D inhibit

Vepdegestrant (ARV-471) is a selective and highly potent estrogen receptor (ER, ESR1) PROTAC degrader with strong degrading activity against the ER protein. By directly degrading the ER protein rather than merely antagonizing its activity, vepdegestrant effectively inhibits the ER signaling pathway and demonstrates significant antitumor activity in ER-positive (ER⁺) breast cancer, with a DC50 value of approximately 2 nM. It is particularly effective against tumors harboring ESR1 mutations.

Theralizumab (TGN1412) is an anti-CD28-targeting monoclonal antibody that directly stimulates T cells. Theralizumab has antitumor activity and is used for the treatment of B-cell chronic lymphocytic leukemia and rheumatoid arthritis.

H3B-8800 is a small-molecule inhibitor and an SF3B1-targeted inhibitor with oral bioactivity and cell permeability. This compound directly binds to the SF3b complex, exhibiting anticancer activity in transfusion-dependent myelodysplastic syndromes and SF3B1-mutant acute myeloid leukemia.

Resatorvid (TAK-242), a selective Toll-like receptor 4 (TLR4) inhibitor, binds directly to Cys747 to prevent TLR4-TIRAP interaction, thereby blocking downstream signaling. Resatorvid exhibits antitumor, anti-inflammatory, and neuroprotective activities.

CSRM617 hydrochloride is a selective small-molecule inhibitor of the transcription factor ONECUT2 (OC2, a master regulator of androgen receptor), with a Kd of 7.43 µM in SPR assays, directly binding to the OC2-HOX domain. CSRM617 hydrochloride induces apoptosis through the appearance of cleaved Caspase-3 and PARP and is well tolerated in the mouse model of prostate cancer [1].

RAS GTPase inhibitor 1 Free Base is a highly potent RAS GTPase inhibitor with antitumor activity. RAS GTPase inhibitor 1 Free Base directly modulates RAS signaling, inhibiting RAS signaling pathways and tumor cell growth.

Muramyl dipeptide (MDP) is a synthetic immunoreactive peptide, consisting of N-acetyl muramic acid attached to a short amino acid chain of L-Ala-D-isoGln. It indirectly decreases osteoclast differentiation by reducing the RANKL/OPG ratio and directly increases osteoblast differentiation by up-regulating Runx2 gene expression through MAPK pathways, thereby inducing bone formation via Runx2.

Lotrifen (Privaprol), an agent of non-hormonal antifertility, causes the arrest and involution of pregnancy. It acts, after the implantation of the blastocyst, directly on the product of conception, which undergoes a slow and gradual degenerative process and ends with the reabsorption or expulsion of it.

Upacicalcet (AJT-240) is an intraventricular calcium mimetic, a SHPT available for human hemodialysis, that inhibits excessive parathyroid hormone (PTH) secretion by directly acting on parathyroid cell membrane calcium-sensitive receptors, thereby lowering blood levels of PTH.Upacicalcet is an orthosteric modulator of calcium-sensitive receptors and prevents adenine-induced secondary vascular calcification and bone disease in a rat model of adenine-induced secondary hyperparathyroidism.

Upacicalcet HCl is an intravesical calcium mimetic that inhibits excessive parathyroid hormone (PTH) secretion by directly acting on calcium-sensitive receptors in parathyroid cell membranes, thereby lowering PTH levels in the blood.Upacicalcet HCl can be used for the treatment of blood Upacicalcet HCl is a novel compound for the treatment of secondary hyperparathyroidism, targeting amino acid-binding sites of calcium-sensitive receptors. binding sites.

(±)4-HDHA (4-Hydroxy docosahexaenoic acid) is a PPARγ agonist with anti-inflammatory activity that directly inhibits endothelial cell proliferation and sprouting angiogenesis via PPARγ, which can be used in the study of diabetes.

Milvexian (BMS-986177/JNJ-70033093) is an orally bioavailable, small-molecule, reversible, and direct antagonist of Factor XIa (FXIa). It exhibits potent inhibitory activity across species, with Ki values of 0.11 nM for human, 0.38 nM for rabbit, and 0.64 nM for dog. By targeting FXIa, Milvexian selectively inhibits the intrinsic pathway of the coagulation cascade. It demonstrates robust antithrombotic efficacy in various in vitro and in vivo models while maintaining a favorable safety profile regarding bleeding risk. It is a critical tool for investigating novel anticoagulant strategies in thrombosis and cardiovascular research.

Ethaselen (BBSKE) is an orally active and selective thioredoxin reductase 1 (TrxR) inhibitor with anticancer activity that directly inhibits TrxR1 activity and is commonly used in combination with oxaliplatin to inhibit tumor growth.Ethaselen induces apoptosis in cancer cells and inhibits the proliferation of colorectal cancer cells.

(Rac)-Upacicalcet is a racemate of Upacicalcet, which serves as an intravenous calcimimetic agent. Upacicalcet acts by directly targeting calcium-sensing receptors on parathyroid cell membranes, effectively suppressing the release of excessive parathyroid hormone (PTH) and reducing blood PTH levels. This compound holds the potential for researching secondary hyperparathyroidism (SHPT) [1].

Triciferol acts as a multiple ligand with combined VDR agonist and HDAC antagonist activities. Triciferol binds directly to the VDR ( IC 50 =87 nM), and functions as an agonist with 1,25D-like potency on several 1,25D target genes. Triciferol induces marked tubulin hyperacetylation, and augments histone acetylation. Triciferol also exhibits efficacious antiproliferative and cytotoxic activities in cancer cell models in vitro [1].

Avobenzone is a dibenzoylmethane endocrine disruptor that binds directly to estrogen receptor β, acting as an estrogen agonist. It is one of the most widely used filters in sunscreens for photoprotection of skin in the UV band.

Estrone (Aquacrine) is an aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone, a major mammalian estrogen. It is converted from ANDROSTENEDIONE directly, or from TESTOSTERONE via ESTRADIOL. In humans, it is produced primarily by the cyclic ovaries, PLACENTA, and the ADIPOSE TISSUE of men and postmenopausal women.

Norepinephrine bitartrate monohydrate is an effective adrenergic receptor (AR) agonist that directly activates α1, α2, and β1 receptors, and is commonly used to induce cardiomyopathy models.

Sodium etidronate (Didronel) is a synthetic therapeutic diphosphonate analog of endogenous pyrophosphate. As a member of the family of drugs known as bisphosphonates, Sodium etidronate differs from endogenous pyrophosphate in its resistance to enzymatic hydrolysis. This agent adsorbs to hydroxyapatite cells and reduces the number of osteoclasts, thereby inhibiting abnormal bone resorption. Etidronate may also directly stimulate bone formation by osteoblasts.