26423-78-9 Usage
General Description
"(17alpha)-pregn-4-ene-3,11,20-trione" is a chemical compound that is also known as 17alpha-hydroxyprogesterone. It is a steroid hormone and a derivative of progesterone, which plays a crucial role in the female reproductive system during pregnancy. This chemical compound is also used in the production of various medications, including hormonal contraceptives and hormone replacement therapy for menopausal women. Additionally, it is involved in the regulation of the menstrual cycle and the maintenance of pregnancy. With its important physiological functions, "(17alpha)-pregn-4-ene-3,11,20-trione" is a significant compound in the field of endocrinology and pharmaceuticals.
Check Digit Verification of cas no
The CAS Registry Mumber 26423-78-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,4,2 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 26423-78:
(7*2)+(6*6)+(5*4)+(4*2)+(3*3)+(2*7)+(1*8)=109
109 % 10 = 9
So 26423-78-9 is a valid CAS Registry Number.
26423-78-9Relevant articles and documents
New steroid 11-ketone group oxidation synthesizing process
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Paragraph 0130; 0131; 0132, (2016/10/09)
The invention discloses a new steroid 11-ketone group oxidation synthesizing process. The method comprises that in a nonprotic organic solvent, under conditions of dimethyl sulfoxide (DMSO) as an oxidant, an organic alkali, dichlorophenyl phosphate and a piperidine aminoxyl free radical, a steroid 11-alpha hydroxyl compound is subjected to an oxidation reaction to generate a steroid 11-ketone group compound, the reaction temperature is -10 DEG C to a solvent reflux temperature, and the piperidine aminoxyl free radical is selected from the group consisting of a 2,2,6,6-tetramethylpiperidine-1-oxyl free radical or an analogue thereof.
