91867-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91867-42-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,6 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91867-42:
(7*9)+(6*1)+(5*8)+(4*6)+(3*7)+(2*4)+(1*2)=164
164 % 10 = 4
So 91867-42-4 is a valid CAS Registry Number.