291273-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291273-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,2,7 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 291273-52:
(8*2)+(7*9)+(6*1)+(5*2)+(4*7)+(3*3)+(2*5)+(1*2)=144
144 % 10 = 4
So 291273-52-4 is a valid CAS Registry Number.
291273-52-4Relevant academic research and scientific papers
Method of producing oxybutynin and its derivatives
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Page 4, (2010/02/05)
An oxybutynin and its derivatives are produced by reacting a phenylketone with a silylcyanide in the presence of a specified asymmetric catalyst to obtain a siloxynitrile, and then reacting the siloxynitrile with a reducing agent and oxidizing the resulting aldehyde, or subjecting the siloxynitrile to a hydrolysis.
