Tauro-obeticholic acid sodium is an active metabolite of Obeticholic acid in rat cortical neurons. Ac-DEVD-CHO TFA is promising for research of neurodegenerative diseases and cancers.

Tapencarium (RZL-012) is a serine/threonine kinase inhibitor. Tapencarium can reduce subcutaneous fat volume. Tapencarium is promising for research of fat-related disorders such as Dercum’s disease and aesthetic applications.

TAK-756 is a TAK1 inhibitor with good selectivity for IRAK1/4 and excellent intra-articular pharmacokinetic properties. TAK1 is a potential molecular target for osteoarthritis (OA) with complementary anti-catabolic and anti-inflammatory effects.

TAK-075 is an orally active CaSR antagonist with an IC50 value of 0.94 nM. TAK-075 can stimulate the transient secretion of parathyroid hormone (PTH) in rats and can effectively prevent a significant reduction in PTH secretion caused by the accumulation of active metabolites, maintaining the normal secretion pattern of PTH. TAK-075 can be used in the research of metabolic diseases and osteoporosis.

Tacrolimus anhydrous 8-epimer (Tacrolimus EP impurity D) is a l-pipecolic acid macrolide lactone, an important immunosuppressive agent that blocks T cell proliferation in vitro by inhibiting the generation of several lymphokines, especially IL-2.

T0080 is a FPR-1 antagonist. T0080 reduces the cell apoptosis, inhibits ROS production and pro-inflammatory cytokines (TNF-α and IL-1β) from plaque macrophages, which attenuates atherosclerotic progression in ApoE−/− mice.

Sulphostin is a covalent inhibitor of dipeptidyl peptidase 4 (DPP4), dipeptidyl peptidase 9 (DPP9), and dipeptidyl peptidase 8 (DPP8) with IC50 values of 79, 1392, 6930 nM, respectively. Sulphostin causes phosphosulfamate modification, irreversibly inhibits the enzyme activity. Sulphostin can be used for inflammation and cancer study.

Sulpho NONOate (Sulfi/NO) does not produce NO at physiological pH. Sulpho NONOate can be used in the experiments about other NO-donor regents as a negative control.

SU-8000 is an inhibitor that selectively targets 17α-hydroxylase and C17-20-lyase in rat testes. When administered to pregnant rats, SU-8000 can cause hypospadias in male fetuses.

Streptothricin F is a bactericidal antibiotic. Streptothricin F interacts with the 30S subunit of 70S ribosome. Streptothricin F shows rapid, bactericidal activity against highly drug-resistant, carbapenem-resistant Enterobacterales (CRE) (MIC50 and MIC90: 2 and 4 μM, respectively) and Acinetobacter baumannii.

StA-IFN-1 is an inhibitor for type I interferon (IFN), that inhibits the activation of IFNβ with an IC50 of 4.1 μM.

ST-539 is the inhibitor for deubiquitinase USP30 with IC50 of 0.37 μM. ST-539 promotes the ubiquitination of mitochondrial proteins, and induces mitochondrial autophagy, thereby regulating mitochondrial homeostasis. ST-539 can be used in research of neurodegenerative diseases.

SSB-2548 is a CXCR-4 inhibitor. SSB-2548 can inhibit the proliferation, migration and induce apoptosis of acute myeloid leukemia cells. SSB-2548 has good gastrointestinal absorption and can be used in the research of leukemia.

Spirovirimat (Compound 7) is a potent Monkeypox virus (MPXV) p37 protein inhibitor with an IC50 value of 35 nM. Spirovirimat blocks the formation of extracellular virions by inhibiting viral membrane wrapping. Spirovirimat is promising for research of Monkeypox virus infections.

Spinosyn A 17-pseudoaglycone is a pseudoaglycone form of the macrocyclic lactone insecticide Spinosyn A.

Spinetoram L (XDE-175-L) is a minor component of Spinetoram. Spinetoram is a kind of green and efficient insecticide with a broad range of action against various insects.

SPA0355 is a thiourea derivative that has antioxidant and anti-inflammatory properties. SPA0355 inhibits the RANKL (receptor activator of nuclear factor κB ligand) induced osteoclast formation in primary bone marrow-derived macrophages. SPA0355 also suppresses the activation of the MAPKs, Akt, and NF-κB pathways. Additionally, SPA0355 promotes osteoblast differentiation, increases alkaline phosphatase activity, and enhances mineral nodule formation. SPA0355 can protect ovariectomized mice from bone loss by stimulating osteoblast differentiation and inhibiting osteoclast resorption, making it useful for studying postmenopausal osteoporosis.

SP3N hydrochloride is a specific degrader of the prolyl isomerase (FKBP12). The alkylamine of SP3N hydrochloride is metabolized to a reactive aldehyde (SP3CHO), which recruits the SCFFBXO22 ligase for FKBP12 degradation. SP3N hydrochloride may be used in research for cancer.

SOBRAC is an irreversible inhibitor of acid ceramidase (Ceramidase) with a Ki of 29.7 nM, and it's also a derivative of the acid ceramidase inhibitor SABRAC. Tolvaptan (OPC-4106

SNT-8370 is an orally active inhibitor of VAP-1 (IC50: 10 nM) and myeloperoxidase (MPO) (IC50: 17 nM), with >100-1000 fold more potency for VAP-1 and MPO versus other mammalian (per)oxidases. SNT-8370 inhibits MPO-mediated LDL lipid peroxidation. SNT-8370 inhibits leukocyte infiltration in lung injury models of acute inflammation. SNT-8370 is an anti-inflammatory agent, and can be used for research of inflammatory disorders.

S-N6-Methyladenosylhomocysteine (Chart 1-1) is a potent inhibitor of histone methyltransferase DOT1L, with the IC50 of 0.29 μM. S-N6-Methyladenosylhomocysteine plays an important role in cancer research.

SMU-1k is a highly effective and broad-spectrum antiviral agent. SMU-1k inhibits ZIKV and DENV-2 with EC50s of 7.08 and 3.96 μM, respectively. SMU-1k significantly inhibits NS5 protein expression and restores the level of STAT2.

SMI-1074 is a PROTAC target protein ligand (Ligand for Target Protein for PROTAC). SMI-1074 can be used for synthesis SMD-3236 and SMD-1087.

SM875 is a cellular prion protein (PrP) degrader (IC50: 7.87 μM). SM875 targets PrP folding intermediates and promotes its degradation through the autophagy-lysosomal pathway. SM875 only acts on nascent, immature PrP molecules and has no effect on mature PrP before synthesis. SM875 can inhibit prion replication and has potential in the study of neurodegenerative diseases (i.e., prion diseases).

SLW131 (Compound 10) is the antagonist for CCR7 with a good affinity of Ki of 9.85 nM. SLW131 inhibits CCL19-induced Go protein activation with an IC50 of 29.4 μM, inhibits β-arrestin2 recruitment with an IC50 of 6.0 μM. SLW131 inhibits CCL19-induced cell morphological changes in primary BMDCs, and CCR7-mediated migration in mouse CD4+ T cell.

SL-176, a WIP1 inhibitor, induces cell cycle arrest and apoptosis when combined with GSK-J4. GSK-364735 sodium is an antiretroviral, that inhibits the integrase of human immunodeficiency virus type 1 (HIV-

SJPYT-310 is a selective PXR antagonist. SJPYT-310 shows no significant cytotoxicity.

Setomagpran is the antagonist for mas-related G protein-coupled receptor (MRGPR), and exhibits anti-inflammatory activity.

SCH-900875 is an orally active, brain-penetrant and selective CXCR3 receptor inhibitor, which also shows high selectivity over CXCR1 and CXCR2 receptors. SCH-900875 binds to CXCR3, blocking the binding of ligands CXCL9, CXCL10, and CXCL11, inhibiting downstream G protein and β-arrestin signaling pathways to suppress inflammatory cell migration. SCH-900875 is promising for research of autoimmune diseases (rheumatoid arthritis, multiple sclerosis) and inflammatory disorders (psoriasis, inflammatory bowel disease).

Sarubicin A (U-58431) is an antibiotic that inhibits Gram-positive and Gram-negative bacteria and has antitumor activity.