91691-46-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91691-46-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,9 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 91691-46:
(7*9)+(6*1)+(5*6)+(4*9)+(3*1)+(2*4)+(1*6)=152
152 % 10 = 2
So 91691-46-2 is a valid CAS Registry Number.