288628-05-7
288628-05-7 structure
- Name: STX64
- Chemical Name: (6-oxo-8,9,10,11-tetrahydro-7H-cyclohepta[c]chromen-3-yl) sulfamate
- CAS Number: 288628-05-7
- Molecular Formula: C14H15NO5S
- Molecular Weight: 309.33800
- Catalog: Research Areas Cancer
- Create Date: 2017-09-11 02:25:07
- Modify Date: 2025-08-24 18:43:38
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Irosustat is a potent steroid sulfatase inhibitor, with an IC50 of 8 nM, and exhibits anti-breast cancer activity.
| Name | (6-oxo-8,9,10,11-tetrahydro-7H-cyclohepta[c]chromen-3-yl) sulfamate |
|---|---|
| Synonyms |
667 Coumate BN 83495
Irosustat STX64 1ttm 667-Coumate |
| Description | Irosustat is a potent steroid sulfatase inhibitor, with an IC50 of 8 nM, and exhibits anti-breast cancer activity. |
|---|---|
| Related Catalog | |
| Target |
IC50: 8 nM (Steroid sulfatase)[1], 0.2 nM (Steroid sulfatase, MCF-7 cells)[2] |
| In Vitro | Irosustat (667 COUMATE) is a potent steroid sulfatase inhibitor, with an IC50 of 8 nM[1]. Irosustat (667 COUMATE) inhibits steroid sulphatase (STS) activity in MCF-7 cells with an IC50 of 0.2 nM, but has no effect on the morphology or proliferation of MCF-7 cells at 10 μM[2]. |
| In Vivo | Irosustat potently inhibits rat liver, with inhibition of >90% when at a 1 mg/kg concentration. Irosustat (2 mg/kg, p.o. for 5 d) blocks the uterine growth stimulated by oestrone sulfate (E1S) in ovariectomized rats. In addition, Irosustat (2, 10 mg/kg, p.o.) plus E1S dose-dependently decreases the growth of NMU-induced mammary tumors in ovariectomized rats[1]. Irosustat (667 COUMATE; 10 mg/kg, p.o.) shows 97.9 ± 0.06% inhibition on steroid sulphatase (STS) activity in rat liver[2]. |
| Cell Assay | MCF-7 cells are cultured in growth medium (minimum essential medium (MEM) containing, phenol red, 10% foetal calf serum (FCS) and essential nutrients). When the cells reach 60% confluency, they are treated with Irosustat (0.001-10 μM) in growth medium. After 72 h of incubation, photographs are taken under normal conditions of light and the number of attached cells in each flask is determined using a Coulter cell counter[2]. |
| Animal Admin | Rats[1] Ludwig rats bearing mammary tumors are used in the assay. Tumor development is monitored, and animals are ovariectomized when tumors reach 0.8-1.5 cm in diameter. Tumors are allowed to regress over a 12- to 13-day period to confirm their hormone-dependent status. Regrowth of tumors is stimulated with oestrone sulfate (E1S; 50 μg/day, s.c.). When tumors have regrown, animals continue to receive either E1S alone or E1S plus Irosustat at 10 mg/kg/day or 2 mg/kg/day, p.o., until tumor regression has occurred. Tumor volumes are calculated from two measured diameters[1]. |
| References |
| Molecular Formula | C14H15NO5S |
|---|---|
| Molecular Weight | 309.33800 |
| Exact Mass | 309.06700 |
| PSA | 107.98000 |
| LogP | 3.42530 |
| Storage condition | 2-8℃ |
| Personal Protective Equipment | Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter |
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| RIDADR | NONH for all modes of transport |