Skip to Content
Merck
CN

S1950

STX64

≥98% (HPLC)

Synonym(s):

667 Coumate, BN 83495

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C14H15NO5S
CAS Number:
288628-05-7
Molecular Weight:
309.34
NACRES:
NA.77
PubChem Substance ID:
329824496
UNSPSC Code:
51111800
MDL number:
MFCD12912443

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

STX64, ≥98% (HPLC)

InChI key

DSLPMJSGSBLWRE-UHFFFAOYSA-N

SMILES string

NS(=O)(=O)Oc1ccc2C3=C(CCCCC3)C(=O)Oc2c1

InChI

1S/C14H15NO5S/c15-21(17,18)20-9-6-7-11-10-4-2-1-3-5-12(10)14(16)19-13(11)8-9/h6-8H,1-5H2,(H2,15,17,18)

assay

≥98% (HPLC)

form

powder

color

white

solubility

DMSO: >20 mg/mL

storage temp.

2-8°C

Gene Information

human ... STS(412)

Related Categories

Biochem/physiol Actions

STX64 is a potent, irreversible inhibitor of steroid sulfatase.
STX64 is a potent, irreversible inhibitor of steroid sulfatase. Inhibition of steroid sulfatase (STS), the enzyme responsible for the hydrolysis of steroid sulfates, represents a potential novel treatment for postmenopausal women with hormone-dependent breast cancer. Estrone and DHEA are formed by this sulfatase pathway and can be converted to steroids (estradiol and androstenediol, respectively), which have potent estrogenic properties. STX64 (667 coumate) is a potent tricylic coumarin-based sulfamate that irreversibly inhibits STS activity (IC50 = 8 nM in a placental microsomal assay system). Estrone sulfamate (EMATE) is also a potent STS inhibitor, but has estrogenic activity.

Features and Benefits

This compound is featured on the Nuclear Receptors (Steroids) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000113360
0000099141
0000073110
0000049071
0000065501

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Xiaoye Sang et al.
The Journal of steroid biochemistry and molecular biology, 183, 80-93 (2018-05-29)
Steroid sulfatase is detectable in most hormone-dependent breast cancers. STX64, an STS inhibitor, induced tumor reduction in animal assay. Despite success in phase І clinical trial, the results of phase II trial were not that significant. Breast Cancer epithelial cells
Yue Wu et al.
Molecular and cellular endocrinology, 486, 79-88 (2019-02-27)
Adrenal androgens dehydroepiandrosterone (DHEA) and DHEA-sulfate (DHEAS) are potential substrates for intracrine production of testosterone (T) and dihydrotestosterone (DHT), or directly to DHT, by prostate cancer (PCa) cells. Production of DHT from DHEAS and DHEA, and the role of steroid
Mengxi Jiang et al.
Journal of hepatology, 64(1), 44-52 (2015-07-30)
Chronic inflammatory liver diseases are associated with estrogen excess and feminization in men, which is thought to be due to compromised liver function to break down estrogens. The goal of this study is to determine whether the inflammatory induction of
Wenmei Wu et al.
International journal of molecular sciences, 21(18) (2020-09-24)
Tip60, a key histone acetyltransferase of the MYST family and member of the nuclear multimeric protein complex (NuA4), regulates the activity and stability of proteins involved in the cell cycle, DNA damage responses, autophagy, etc. However, the function and regulatory
Ning Zhou et al.
Journal of ethnopharmacology, 154(3), 687-695 (2014-05-09)
Shu-Gan-Liang-Xue Decoction (SGLXD), a traditional Chinese herbal formula used to ameliorate the hot flushes in breast cancer patients, was reported to have anti-tumor effect on breast cancer. Estrogen plays a critical role in the genesis and evolution of breast cancer.
View All Related Papers

Articles

Nuclear Receptors (Steroids)

We offers many products related to Nuclear Receptors (Steroids) for your research needs.

核受体（类固醇）

我们可提供多种核受体（类固醇）相关产品，满足您的各类研究需求。

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service