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19431-20-0

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19431-20-0 Usage

Description

14-dehydro Zymostenol is a precursor to cholesterol . It increases the percentage of myelin basic protein-positive (MBP+) oligodendrocytes formed from oligodendrocyte precursor cells when used at concentrations of 5.8 and 17 μM.

Check Digit Verification of cas no

The CAS Registry Mumber 19431-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,4,3 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19431-20:
(7*1)+(6*9)+(5*4)+(4*3)+(3*1)+(2*2)+(1*0)=100
100 % 10 = 0
So 19431-20-0 is a valid CAS Registry Number.

19431-20-0Relevant articles and documents

Stereospecific reduction of keto group in 3β-triphenylmethoxy-5α -cholest-8(14)-en-15-one

Ignatov,Misharin

, p. 167 - 168 (2007/10/03)

The reduction of 3β-triphenylmethoxy-5α-cholest-8(14)-en-15-one with lithium aluminum hydride resulted in a quantitative yield of 3β-triphenylmethoxy-5α-cholest-8(14)-en-15β-ol.

Synthesis of meiosis-activating sterols containing fluorine

Wenckens, Martin,Gronvald, Frederik,Hansen, John Bondo

, p. 503 - 507 (2007/10/03)

It is documented that specific types of sterol play a major role in the resumption of meiosis in oocytes from mice in vitro. 4,4-Dimethyl-5α-cholesta-8,14,24-trien-3β-ol (FF-MAS) isolated from human follicular fluid and 4,4-dimethyl-5α-cholesta-8,24-dien-3β-ol (T-MAS) isolated from bull testicular tissue, have been shown to activate (promote) meiosis in vitro. In order to evaluate the biological activity and stability of such compounds, new demethylsterol derivatives have been synthesised. Using diethylaminosulfur trifluoride (DAST) it was possible to synthesise selected Δ8, Δ14 sterols with mono and difluoro substitution at C3. Acta Chemica Scandinavica 1998.

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