68891-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68891-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,8,9 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 68891-16:
(7*6)+(6*8)+(5*8)+(4*9)+(3*1)+(2*1)+(1*6)=177
177 % 10 = 7
So 68891-16-7 is a valid CAS Registry Number.