Tipifarnib (IND 58359; R115777) is a potent and specific farnesyltransferase inhibitor with an IC50 of 0.6 nM.

TH-302 is selective hypoxia-activated prodrug targeting hypoxic regions of solid tumors with IC50 of 19 nM, demonstrates 270-fold enhanced cytotoxicity under hypoxia versus their potency under aerobic conditions, stable to cytochrome P450 metabolism.

TG-101348 (SAR302503) is a selective inhibitor of JAK2 with IC50 of 3 nM, 35- and 334-fold more selective for JAK2 versus JAK1 and JAK3, TG-101348 also inhibit BRD4 with IC50 of 340 nM.

TG101209 is a selective JAK2 inhibitor with IC50 of 6 nM, less potent to Flt3 and RET with IC50 of 25 nM and 17 nM, ~30-fold selective for JAK2 than JAK3, sensitive to JAK2V617F and MPLW515L/K mutations; TG101209 inhibit BRD4 activity with IC50 of 130 nM.

TG100115 is a PI3Kγ/δ inhibitor with IC50 of 83 nM/235 nM, with little effect on PI3Kα/β. Phase 1/2.

Telaprevir (VX-950) is an HCV NS3-4A serine protease inhibitor with IC50 of 0.35 μM.

Tecovirimat (ST-246, Tpoxx) is a potent, orally bioavailable, first-in-class inhibitor of orthopoxvirus egress with EC50 of 0.01-0.6 uM against a panel of Orthopoxviruses; ST-246 is active against multiple orthopoxviruses, including vaccinia, monkeypox, c

TDZD-8 is a non-ATP competitive GSK-3β inhibitor with IC50 of 2 μM.

TAS-120 is a highly potent and selective irreversible FGFR inhibitor, effective in tumors harboring various FGFR gene abnormalities.

Tariquidar (XR9576) is a potent and selective noncompetitive inhibitor of P-glycoprotein with Kd of 5.1 nM.

Tapinarof (WBI-1001) is a natural aryl hydrocarbon receptor (AhR) agonist with an EC50 of 13 nM. Tapinarof resolves skin inflammation in mice.

Tamoxifen(ICI-46474) is an antagonist of the estrogen receptor in breast tissue via its active metabolite, hydroxytamoxifen,showed potent activity against COVID-19(SARS-COV-2) with EC50 MERS-COV(10.117), SARS-COV(11.696).

TAK-875 is a potent, selective and orally bioavailable GPR40 agonist with EC50 of 0.072 μM.

TAK-779 is a potent and selective nonpeptide antagonist of CCR5 and CXCR3, with a Ki of 1.1 nM for CCR5, and effectively and selectively inhibits R5 HIV-1, with EC50 and EC90 of 1.2 nM and 5.7 nM, respectively, in MAGI-CCR5 cells.

TAK-733 is a potent and selective MEK allosteric site inhibitor for MEK1 with IC50 of 3.2 nM, inactive to Abl1, AKT3, c-RAF, CamK1, CDK2, c-Met, etc.

T-5224 is a selective inhibitor of c-Fos/activator protein (AP)-1, attenuates lipopolysaccharide-induced liver injury in mice.

T 705(Favipiravir) is a RNA-directed RNA polymerase NS5B inhibitor.T 705(Favipiravir) is useful for Antiviral agents.

SW-044248 is a Novel Inhibitor of Topoisomerase I Is Selectively Toxic for a Subset of Non-Small Cell Lung Cancer Cell Lines.

Substance P antagonists (SPA).

Sotrastaurin(AEB-071) is a potent and selective pan-PKC inhibitor, mostly for PKCθ with Ki of 0.22 nM; inactive to PKCζ.

Sorafenib(BAY 43-9006) is a potent inhibitor of Raf-1 with IC50 values of 6 nM, 22 nM and 90 nM for Raf-1, B-Raf, and VEGFR2 respectively, BAY 43-9006 suppresses both wild-type and V599E mutant BRAF activity in vitro.

Sorafenib Tosylate (Bay 43-9006, Nexavar) is a multikinase inhibitor of Raf-1, B-Raf and VEGFR-2 with IC50 of 6 nM, 22 nM and 90 nM, respectively.

Solithromycin is a novel ketolide antibiotic.

Solcitinib, also known as GSK2586184 or GLPG0778, is a Janus kinase 1 (JAK1) inhibitor.

SNS-032(BMS-387032) is a potent inhibitor of cyclin-dependent kinases (cdks) 9, 2 and 7 (IC50 values are 4, 38 and 62 nM respectively).

Sivelestat(ONO5046; LY544349; EI546) is a competitive inhibitor of human neutrophil elastase(IC50 = 44 nM; Ki=200 nM); also inhibited leukocyte elastase obtained from rabbit, rat, hamster and mouse.

Sitravatinib (MGCD516) is a novel small molecule inhibitor targeting multiple RTKs involved in driving sarcoma cell growth, including c-Kit, PDGFRβ, PDGFRα, c-Met, and Axl.

Sitaxentan sodium (TBC-11251) is a selective endothelin receptor-A antagonist with IC50 and Ki of 1.4 nM and 0.43 nM, respectively.

SGX-523 is a selective Met inhibitor with IC50 of 4 nM, no activity to BRAFV599E, c-Raf, Abl and p38α.

SGI-1776 is a novel ATP competitive inhibitor of Pim1 with IC50 of 7 nM; 50- and 10-fold selective versus Pim2 and Pim3, also potent to Flt3 and haspin.