SR9009 is an agonist of REV-ERB with IC50 = 670 nM for REV-ERBα and IC50 = 800 nM for REV-ERBβ.

SR3335 (ML-176) is a selective RORα synthetic ligand, directly binds to RORα, but not other RORs, and functions as a selective partial inverse agonist of RORα in cell-based assays.

SR 8278 is the first synthetic antagonist of the nuclear heme receptor Rev-ErbA, inhibits the REV-ERBα transcriptional repression activity with EC50 of 0.47 uM in HEK293 cells..

SR 0987 is an agonist of the T cell-specific isoform of RORγ (RORγt, retinoic acid receptor-related orphan receptor-γt), inducing reporter gene expression with an EC50 value of ~800 nM.

SPI 112 is novel Shp2 PTP inhibitor.

SPDP (SPDP Crosslinker) is a short-chain crosslinker for amine-to-sulfhydryl conjugation via NHS-ester and pyridyldithiol reactive groups that form cleavable (reducible) disulfide bonds with cysteine sulfhydryls. It is a glutathione cleavable ADC linker u

SP-420 is an orally active small molecule that selectively binds iron and removes it from the body. SP-420 has shown excellent tissue penetration, highly efficient iron binding and a promising safety profile.

SNS-314 is a potent and selective inhibitor of Aurora A, Aurora B and Aurora C with IC50 of 9 nM, 31 nM, and 3 nM, respectively.

Skepinone-L is a selective p38α-MAPK inhibitor with IC50 of 5 nM.

Sirtinol is a cell-permeable, specific inhibitor of sirtuin NAD-dependant histone deacetylases.

Siramesine(Lu 28-179) is a selective sigma-2 receptor agonist, which has been shown to trigger cell death of cancer cells and to exhibit a potent anticancer activity in vivo.

Siramesine(Lu 28-179) Hcl is a selective sigma-2 receptor agonist, which has been shown to trigger cell death of cancer cells and to exhibit a potent anticancer activity in vivo.

Sildenafil is a Phosphodiesterase 5 Inhibitor with IC50 of 5.22 nM.

SGC 0946 is a highly potent and selective DOT1L methyltransferase inhibitor with IC50 of 0.3 nM, is inactive against a panel of 12 PMTs and DNMT1.

SF1670 is a selective PTEN (phosphatase and tensin homolog) inhibitor with an IC50 of 2 micromolar.

Sertindole, a neuroleptic, is one of the newer antipsychotic medications available.

Sertaconazole nitrate is a topical broad-spectrum antifungal that is developed to provide an additional agent for the treatment of superficial cutaneous and mucosal infections.

Serotonin hydrochloride is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist. Serotonin hydrochloride is also a catechol O-methyltransferase (COMT) inhibitor with a Ki of 44 μM.

Sematilide, also known as CK-1752, is a class III antiarrhythmic.

Securinine is an alkaloid originally isolated from S. suffructicosa.It reduces proliferation of SW480 colon adenocarcinoma cells in a dose- and time-dependent manner via increased Beclin 1 expression and induction of autophagy.

SEC inhibitor KL-2 is a peptidomimetic inhibitor of super elongation complex (SEC) and transcription elongation by Pol II, disrupts cyclin T1-AFF4 interaction (Ki=1.50 uM) within SEC; disrupts the interaction between the SEC scaffolding protein AFF4 and P

SEC inhibitor KL-1 is a peptidomimetic inhibitor of super elongation complex (SEC) and transcription elongation by Pol II, disrupts cyclin T1-AFF4 interaction (Ki=3.48 uM) within SEC; disrupts the interaction between the SEC scaffolding protein AFF4 and P

SCR7 pyrazine is a potent and selective inhibitor of non-homologous end joining (NHEJ),useful tool compound for CRISPR editing.

SC-514 (GK 01140), a small molecule, is a selective inhibitor of IKK-2; does not inhibit other IKK isoforms or other serine-threonine and tyrosine kinases.

SBC-110736 is a novel inhibitor of proprotein convertase subtilisin kexin type 9 (PCSK9), lowering cholesterol levels in mice.

SB505124 is a selective inhibitor of TGFβR for ALK4, ALK5 with IC50 of 129 nM and 47 nM, respectively, also inhibits ALK7, but does not inhibit ALK1, 2, 3, or 6.

SB 415286 is a potent and selective cell-permeable, ATP-competitive inhibitor of GSK3α with an IC50 value of 78 nM (similar potency for GSK3β) and a Ki value of 31 nM.

Saxagliptin (rINN) is an orally active hypoglycemic (anti-diabetic drug) of the new dipeptidyl peptidase-4 (DPP-4) inhibitor class of drugs.

Savolitinib(Volitinib; AZD-6094; Volitinib) is an orally bioavailable inhibitor of the c-Met receptor tyrosine kinase(IC50= 5 nM) with potential antineoplastic activity.

Salubrinal is a selective inhibitor of eIF2α dephosphorylation and inhibits ER stress-mediated apoptosis with EC50 of ~15 μM.