678994-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 678994-80-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,8,9,9 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 678994-80:
(8*6)+(7*7)+(6*8)+(5*9)+(4*9)+(3*4)+(2*8)+(1*0)=254
254 % 10 = 4
So 678994-80-4 is a valid CAS Registry Number.