642494-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642494-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,9 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 642494-83:
(8*6)+(7*4)+(6*2)+(5*4)+(4*9)+(3*4)+(2*8)+(1*3)=175
175 % 10 = 5
So 642494-83-5 is a valid CAS Registry Number.
642494-83-5Relevant academic research and scientific papers
Processes for preparing substituted aryl boronic acids
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Page 4, (2008/06/13)
The invention relates to processes for preparing a compound of the formula (V) and alkyl boronic esters thereof wherein R1 is attached at the 2 or 3 position of the benzene ring, R2 is attached at the 5 or 6 position, and R1/su
