83543-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83543-09-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,4 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83543-09:
(7*8)+(6*3)+(5*5)+(4*4)+(3*3)+(2*0)+(1*9)=133
133 % 10 = 3
So 83543-09-3 is a valid CAS Registry Number.