High Quality 17alpha-Estradiol for Female Health Protection CAS 57-91-0 CAS NO.57-91-0

1. Hubei Jusheng Technology Co., Ltd.,  is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates in China.

2. The yearly production capacity is 50000MT, 80% for export.We have a professinal export team. Both by Air and by Sea,we ensure that we meet the customer expectations with promptness.
3. Our company facing global High-tech pharmaceutical raw materials, high complex new type intermediates, fine chemicals custom synthesis, scale-up production and Rare chemicals trade. Corey have well-equipped machine, strong technical force and considerate marketing team service.
4. We also have rich experience advantage in basic research, small scale process development, scale-up, industrial technology development & production and cost control.  

1. Quick Detail:

17alpha-Estradiol
Alias: Epiestradial; 17a-Estradiol (8CI); 1, 3, 5-Estratriene-3, 17a-diol; 13b-Methyl-1, 3, 5(10)-gonatriene-3, 17a-diol; 17-Epiestradiol; 17a-Oestradiol; 3, 17-Dihydroxyestratriene; 3, 17a-Dihydroxyestra-1, 3, 5(10)-triene; 3, 17a-Dihydroxyoestra-1, 3, 5(10)-triene; Alfatradiol; Epiestrol; Estra-1, 3, 5(10)-triene-3, 17a-diol; NSC 20293; Oestra-1, 3, 5(10)-triene-3, 17a-diol; A-Estradiol;
Purity: 99% min.
CAS Registry Number: 57-91-0
Einecs No: 200-354-8
Grade: Pharmaceutical Grade
Storage: Shading, confined preservation
Manufacturer: Sai Chuang
Delivery time: Within 12 hours upon receipt of payment
Delivery: EMS, DHL, TNT, FedEx, UPS

2. Product description:

MF: C18H24O2
MW: 272.38
Purity: 99%
Appearance: White Solid
Melting point: 176-180º C.
Density: 1.17 g/cm3
Boiling Point: 445.9 ° C at 760 mmHg
Melting Point: 176-180 ° C(lit. )
Flash Point: 209.6 ° C
Storage Temperature: 0-6° C
Refractive index: 1.599
Solubility: Ethanol: 50 mg/mL, clear, colorless

3. Application:

17alpha-Estradiol (known as α -Estradiol or 17 α -Estradiol) is a biologically active estrogen in human breast cancer cells in tissue culture. 17alpha-Estradiol and its selective receptor, ER-X, are not part of a classical hormone/receptor endocrine system but of a system with important autocrine/paracrine functions in the developing and adult brain. 17alpha-Estradiol may have enormous implications for hormone replacement strategies at the menopause and in the treatment of such neurodegenerative disorders as Alzheimer's disease and ischemic stroke.

4. Specifications:

Product name: 17alpha-Estradiol
Other name: NSC 20293; Oestra-1, 3, 5(10)-triene-3, 17a-diol; A-Estradiol; 17 α -Estradiol
Assay: 99%
Molecular formula: C18H24O2
Molecular weight: 272.38