20869-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20869-98-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,6 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20869-98:
(7*2)+(6*0)+(5*8)+(4*6)+(3*9)+(2*9)+(1*8)=131
131 % 10 = 1
So 20869-98-1 is a valid CAS Registry Number.