207444-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 207444-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,4,4 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 207444-45:
(8*2)+(7*0)+(6*7)+(5*4)+(4*4)+(3*4)+(2*4)+(1*5)=119
119 % 10 = 9
So 207444-45-9 is a valid CAS Registry Number.
207444-45-9Relevant academic research and scientific papers
Asymmetric synthesis of A-factor
Crawforth, James M.,Fawcett, John,Rawlings, Bernard J.
, p. 1721 - 1725 (2007/10/03)
The synthesis of enantlopure A-factor ['autoregulatory factor'; (3R)-(-)-2-(6-methylheptanoyl)-3-hydroxymethylbutano-4-lactone] by the completely diastereoselective benzyloxymethylation of (4R)-3-(3-phenylpropanoyl)-4-isopropyloxazolidin-2-one is reported.
