91767-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91767-81-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,6 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91767-81:
(7*9)+(6*1)+(5*7)+(4*6)+(3*7)+(2*8)+(1*1)=166
166 % 10 = 6
So 91767-81-6 is a valid CAS Registry Number.