28697-76-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28697-76-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,9 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 28697-76:
(7*2)+(6*8)+(5*6)+(4*9)+(3*7)+(2*7)+(1*6)=169
169 % 10 = 9
So 28697-76-9 is a valid CAS Registry Number.