97691-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97691-99-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,6,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97691-99:
(7*9)+(6*7)+(5*6)+(4*9)+(3*1)+(2*9)+(1*9)=201
201 % 10 = 1
So 97691-99-1 is a valid CAS Registry Number.