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Dexamethasone CAS:50-02-2

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Megestrol is an orally active progestogen. Megestrol is used in combinations as oral contraceptive and as antineoplastic agent.


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Description

Estrone (E1, and also oestrone) is an estrogenic hormone secreted by the ovary as well as adipose tissue with the chemical name of 3-hydroxyestra-1,3,5(10)-triene-17-one and the chemical formula C18H22O2. Estrone is an odorless, solid crystalline powder, white in color with a melting point of 254.5°C and a specific gravity of 1.23. Estrone is one of several natural estrogens, which also include estriol and estradiol. Estrone is the least abundant of the three hormones; estradiol is present almost always in the reproductive female body, and estriol is abundant primarily during pregnancy.
Estrone is known to be a carcinogen for human females as well as a cause of breast tenderness or pain, nausea, headache, hypertension, and leg cramps in the context of non-endogenous exposure. In men, estrone has been known to cause anorexia, nausea, vomiting, and erectile dysfunction. Estrone is relevant to health and disease states because of its conversion to estrone sulfate, a long-lived derivative. Estrone sulfate acts as a reservoir that can be converted as needed to the more active estradiol. It is the predominant estrogen in postmenopausal women.
Estrone was discovered and isolated by German chemist Adolf Butenandt.

Basic Info

Chemical Name estrone
Synonyms Femidyn;Estrin;Estra-1,3,5(10)-trien-17-one, 3-hydroxy-;3-Hydroxy-1,3,5(10)-estratrien-17-one;Estrone;Expand
CAS No. 53-16-7
Molecular Formula C18H22O2
Molecular Weight 270.36600
PSA 37.30000
LogP 3.81740

Numbering system

UNII 2DI9HA706A

Properties

Appearance & Physical State White crystalline powder
Density 1.164 g/cm3
Boiling Point 445.2ºC at 760 mmHg
Melting Point 258-261ºC
Flash Point 189.7ºC
Refractive Index 165 ° (C=1, Dioxane)
Water Solubility 0.03 g/L
Stability Stable under normal temperatures and pressures.
Storage Condition Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.

Safety Info

RTECS KG8575000
Safety Statements S53-S45
HS Code 2937290090
Packing Group I; II; III
WGK Germany 3
Risk Statements R45; R60; R61
Hazard Codes T
Signal Word Danger
Caution Statement P210; P260; P280; P301 + P310 + P330; P302 + P352 + P312; P370 + P378
Symbol GHS02, GHS06, GHS08
Hazard Declaration H225; H301 + H311 + H331; H370

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Product Style

_MG_4649

 

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Thanks for your considering of Hebei Shuoxi Biotechnology Co., Ltd.(HBSX).   HBSX is a fast growing intermediates company,Which located in Shijiazhuang,Hebei Province.
HBSX is specialized in pharmaceutical intermediates, veterinary drug intermediates and dyes intermediates,such as phenylacetamide, dimethylamine hcl, benzyl chloride etc., HBSX also supply various industrial chemicals for customers, such as citric acid,potassium chloride etc.
After ten years development,HBSX has become a Diversified development company,not only involves in chemicals, but also real estate ,clothes ,agricultural products and so on.
So far, HBSX has business in more than 35 countries,most big customers come from europe and America, because among the suppliers in china,HBSX can always make the product quality best, some of the products from HBSX can reach the purity of 99.9+, such as 2-phenylacetamide. This is the important reason for customers who choosing HBSX.
In future, HBSX must become to a more important trade bridge for china and foreign countries especially in pharmaceutical industries.

 

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Why Choose US?
1. Selecting raw materials strictly,our products are the highest purity.
2.Reasonable and competitive price. Provide the best and professional service.
3.Fast delivery of the samples ,samples from stock. Reliable shipping way.
4.Full experience of large numbers containers loading in Chinese sea port.
5. Best after-service after shipment .
6. Professional documents for your custom clearance.

 

FAQ:
Q1:Will you supply samples for testing?
A: Free samples for the quality evaluation for most products, but customers only need to undertake the shipping fee for delivery the samples to your door.

Q2:What’s your MOQ?
A: For the high value product, our MOQ starts from 10g,100g and 1kg.

Q3:Which kind of payment terms do you accept?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment
by T/T, Western Union or Alibaba). Bulk order by T/T or L/C.

Q4:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.

Q5:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.


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