65219-06-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65219-06-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,2,1 and 9 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 65219-06:
(7*6)+(6*5)+(5*2)+(4*1)+(3*9)+(2*0)+(1*6)=119
119 % 10 = 9
So 65219-06-9 is a valid CAS Registry Number.
65219-06-9Relevant academic research and scientific papers
Synthesis of beta-lactams from azetidine carboxylic acid esters
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, (2008/06/13)
Azetidine carboxylic acid esters are converted into enol silyl ethers which, as enamino ketene acetals, undergo ready oxidative cleavage of the ethylenically unsaturated double bond, e.g. by dye-sensitized photo-oxygenation, to form beta-lactams. The beta
