7781-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7781-20-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7781-20:
(6*7)+(5*7)+(4*8)+(3*1)+(2*2)+(1*0)=116
116 % 10 = 6
So 7781-20-6 is a valid CAS Registry Number.
7781-20-6Relevant articles and documents
PYRIMIDINES, METHODS FOR THE PRODUCTION THEREOF, AND USE THEREOF
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Page/Page column 61-62, (2010/02/08)
The invention relates to pyrimidines of formula (I), wherein Ln have the meaning indicated in the description while the substituents R1, R2, and R3 have the following meaning: R1 represents C1/s