2979-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2979-83-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,7 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2979-83:
(6*2)+(5*9)+(4*7)+(3*9)+(2*8)+(1*3)=131
131 % 10 = 1
So 2979-83-1 is a valid CAS Registry Number.