91881-78-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91881-78-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,8 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91881-78:
(7*9)+(6*1)+(5*8)+(4*8)+(3*1)+(2*7)+(1*8)=166
166 % 10 = 6
So 91881-78-6 is a valid CAS Registry Number.