(E/Z)-4-hydroxy Tamoxifen is an active metabolite of tamoxifen that is formed by the action of cytochrome P450 2D6 in human liver.

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A novel, potent and selective inhibitor of CDK4/6 with biochemical IC50 of 1 nM and 2 nM for CDK4/cyclin D1 and CDK6/cyclin D3, respectively.

A novel, potent and selective inhibitor of CDK4/6 with biochemical IC50 of 1 nM and 2 nM for CDK4/cyclin D1 and CDK6/cyclin D3, respectively.

AZD8186 is an inhibitor of the beta isoform of phosphoinositide-3 kinase (PI3K), with potential antineoplastic activity.

AZD8835 ia a novel mixed inhibitor of PI3Kα and PI3Kδ with IC50 of 6.2 nM and 5.7 nM, respectively, also with selectivity against PI3Kβ (IC50=431 nM) and PI3Kγ (IC50=90 nM).

AZD9496 is a potent and orally bioavailable selective estrogen receptor downregulator(Ki=0.7 nM) and antagonist.

BIIB021(CNF2024) is an orally available, fully synthetic small-molecule inhibitor of HSP90 with Ki and EC50 of 1.7 nM and 38 nM, respectively.

BMS-599626 (AC480) is a selective and efficacious inhibitor of HER1 and HER2 with IC50 of 20 nM and 30 nM, respectively.

BMS-754807 is a potent and reversible inhibitor of IGF-1R/IR family kinases, inhibits IGF-1R, IR, Met, TrkA and TrkB with IC50 of 1.8 nM, 1.7 nM, 5.6 nM, 7.4 nM and 4.1 nM, respectively.

BSI-201 (Iniparib; NSC-746045) is a PARP1 inhibitor with demonstrated effectiveness in triple-negative breast cancer (TNBC).

CI994 (Tacedinaline) is an anti-cancer drug which inhibits HDAC1 with IC50 of 0.57 μM.

CO-1686 hydrobromide is a novel, irreversible and orally delivered kinase inhibitor that specifically targets the mutant forms of EGFR including T790M (IC50=21 nM).

Dofequidar fumarate(MS-209 fumarate), an orally active quinoline compound, has been reported to overcome MDR by inhibiting ABCB1/P-gp, ABCC1/MDR-associated protein 1, or both.

E7449 is an orally bioavailable, potent, small molecule inhibitor of PARP1 and PARP2; enhances the efficacy of radiotherapy and chemotherapy and has potent single agent anticancer activity in BRCA-deficient tumors.

Elacestrant dihydrochloride (RAD1901 dihydrochloride) is a selective and orally available estrogen receptor (ERR) degrader with IC50 values of 48 and 870 nM for ERα and ERβ, respectively.

Elacridar is an orally selectly potent P-glycoprotein (P-gp/ABCG1) inhibitor.

Endoxifen is a Estrogen receptor α (ERα) ligand; potent antiestrogen,an active metabolite of the cancer drug tamoxifen.

Entinostat (MS-275) strongly inhibits HDAC1 and HDAC3 with IC50 of 0.51 μM and 1.7 μM, compared with HDACs 4, 6, 8, and 10. Phase 1/2.

Eribulin Mesylate

Eribulin Mesylate (E7389 Mesylate), a synthetic analogue of halichondrin B in phase III clinical trials for breast cancer, binds to tubulin and microtubules.

Fadrozole is a non-steroidal aromatase inhibitor (IC50s = 5 and 1.4 nM for human placental and rat ovarian microsomal aromatase, respectively).