68997-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68997-77-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,9,9 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 68997-77:
(7*6)+(6*8)+(5*9)+(4*9)+(3*7)+(2*7)+(1*7)=213
213 % 10 = 3
So 68997-77-3 is a valid CAS Registry Number.