676997-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 676997-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,9,9 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 676997-67:
(8*6)+(7*7)+(6*6)+(5*9)+(4*9)+(3*7)+(2*6)+(1*7)=254
254 % 10 = 4
So 676997-67-4 is a valid CAS Registry Number.