71843-68-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71843-68-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,4 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71843-68:
(7*7)+(6*1)+(5*8)+(4*4)+(3*3)+(2*6)+(1*8)=140
140 % 10 = 0
So 71843-68-0 is a valid CAS Registry Number.