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(E)-16-<methylene>-5α-androstan-3β,17β-diol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

137041-47-5

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137041-47-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137041-47-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,4 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137041-47:
(8*1)+(7*3)+(6*7)+(5*0)+(4*4)+(3*1)+(2*4)+(1*7)=105
105 % 10 = 5
So 137041-47-5 is a valid CAS Registry Number.

137041-47-5Relevant academic research and scientific papers

Steroids, XLV. Neighbouring Group Participation, XII. Decomposition of (Z)-16-Amidomethylene-17β-hydroxysteroids Mediated by Neighbouring Group Participation

Vincze, Iren,Somlai, Csaba,Schneider, Gyula,Dombi, Gyoergy,Mak, Marianna

, p. 187 - 192 (2007/10/02)

The sodium tetrahydroborate reduction of 16-methylene>-17-ketosteroids 1aa, 2aa and 2ba affords (Z)-16- and (E)-16-methylene>-17β-hydroxysteroids (Z)-3, (E)-3, (Z)-4b, (Z)-4a, (Z)-5c and (E)-5a.The N-acetyl group

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