680974-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 680974-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,0,9,7 and 4 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 680974-13:
(8*6)+(7*8)+(6*0)+(5*9)+(4*7)+(3*4)+(2*1)+(1*3)=194
194 % 10 = 4
So 680974-13-4 is a valid CAS Registry Number.