220969-59-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220969-59-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,9,6 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 220969-59:
(8*2)+(7*2)+(6*0)+(5*9)+(4*6)+(3*9)+(2*5)+(1*9)=145
145 % 10 = 5
So 220969-59-5 is a valid CAS Registry Number.
220969-59-5Relevant articles and documents
PROCESS FOR THE PREPARATION OF PYRIDYLCARBOXYLIC AMIDES AND ESTERS
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Page/Page column 21, (2010/11/27)
The invention relates to a process for the preparation of pyridylcarboxylic amides and esters I, Formula (I) wherein Hal, X and R1 have the meanings given in claim 1, which comprises the following steps: (a) heating a mixture consisting essenti
