677-31-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 677-31-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,7 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 677-31:
(5*6)+(4*7)+(3*7)+(2*3)+(1*1)=86
86 % 10 = 6
So 677-31-6 is a valid CAS Registry Number.