H3B-5942
Modify Date: 2025-08-25 17:51:03
H3B-5942 structure
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Common Name | H3B-5942 | ||
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| CAS Number | 2052128-15-9 | Molecular Weight | 494.63 | |
| Density | N/A | Boiling Point | N/A | |
| Molecular Formula | C31H34N4O2 | Melting Point | N/A | |
| MSDS | N/A | Flash Point | N/A | |
Use of H3B-5942H3B-5942 is a selective, irreversible and orally active estrogen receptor covalent antagonist, inactivates both wild-type and mutant ERα by targeting Cys530, with Kis of 1 nM and 0.41 nM, respectively. H3B-5942 reduces ERα target gene GREB1, shows potent antitumor activity both in multiple cell lines or animals bearing ERαWT or ERα mutations[1]. |
| Name | H3B-5942 |
|---|
| Description | H3B-5942 is a selective, irreversible and orally active estrogen receptor covalent antagonist, inactivates both wild-type and mutant ERα by targeting Cys530, with Kis of 1 nM and 0.41 nM, respectively. H3B-5942 reduces ERα target gene GREB1, shows potent antitumor activity both in multiple cell lines or animals bearing ERαWT or ERα mutations[1]. |
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| Related Catalog | |
| Target |
ERαY537S:0.41 nM (Ki) ERαWT:1 nM (Ki) |
| In Vitro | H3B-5942 is a selective and irreversible estrogen receptor covalent antagonist, inactivates both wild-type and mutant ERα by targeting Cys530, with Kis of 1 nM and 0.41 nM, respectively[1]. H3B-5942 elevates ERα protein level distinct from SERMs/SERD, blocks ERα-dependent transcription in breast cancer cells. H3B-5942 (0.01-10 μM) reduces ERα target gene GREB1 in MCF7-ERαWT, various MCF7-ERαMUT lines, and the PDX-ERαY537S/WT line[1]. H3B-5942 also decreases proliferation of MCF7-Parental, MCF7-LTED-ERαWT, and MCF7-LTED-ERαY537C lines with GI50s of 0.5, 2, and 30 nM, respectively. H3B-5942 (10-25 nM) in combination with CDK4/6 inhibitors (≥25 pM) has synergic inhibitory effect on multiple cell lines bearing ERαWT or clinically frequent ERα mutations[1]. |
| In Vivo | H3B-5942 (1, 3, 10, or 30 mg/kg, p.o, q.d.) dose-dependently inhibits tumor growth in MCF7 xenograft model in athymic female nude mice. H3B-5942 (3, 10, 30, 100, and 200 mg/kg, p.o, q.d.) exhibits similar anti-tumor activity in the ERαY537S/WT ST941 model in athymic female nude mice[1]. |
| References |
| Molecular Formula | C31H34N4O2 |
|---|---|
| Molecular Weight | 494.63 |