903-03-7 Usage
General Description
3-methoxypregna-3,5-dien-20-one is a synthetic chemical compound with the molecular formula C22H28O2. It is a derivative of the steroid hormone progesterone and is often used in the production of pharmaceuticals, particularly hormonal contraceptives and hormone replacement therapy. 3-methoxypregna-3,5-dien-20-one has been shown to have anti-inflammatory, anti-proliferative, and anti-tumor properties, making it a potentially valuable ingredient for the treatment of certain medical conditions. Additionally, 3-methoxypregna-3,5-dien-20-one has also been investigated for its potential as a biosynthesis precursor in the production of other steroid molecules. While there is ongoing research into its various applications, the precise mechanisms and potential side effects of 3-methoxypregna-3,5-dien-20-one are not fully understood and further study is warranted to fully elucidate its potential uses and limitations.
Check Digit Verification of cas no
The CAS Registry Mumber 903-03-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,0 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 903-03:
(5*9)+(4*0)+(3*3)+(2*0)+(1*3)=57
57 % 10 = 7
So 903-03-7 is a valid CAS Registry Number.
903-03-7Relevant articles and documents
Preparation method for 5,7-pregnadien-3,20-dion-diethylene glycol ketal
-
Paragraph 0042-0044; 0050-0051; 0052-0053; 0054-0055, (2020/03/06)
The invention provides a preparation method for 5,7-pregnadien-3,20-dion-diethylene glycol ketal. The method comprises the following steps: performing an etherification reaction on progesterone and anetherification agent under the action of a catalyst to generate an ether; performing a dehydrogenation reaction on the ether and a dehydrogenation reagent to generate 6-dehydroprogesterone; and performing ketalation on the 6-dehydroprogesterone and ethylene glycol under the action of a catalyst and a dehydrating agent to generate the 5,7-pregnadien-3,20-dion-diethylene glycol ketal. The 5,7-pregnadien-3,20-dion-diethylene glycol ketal with less impurities can be obtained through the etherification, dehydrogenation reaction and ketalation, and the method has the advantages of a short route, ahigh yield, low raw material costs, simple operation and environmental protection, and is suitable for industrial production.
