90843-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90843-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,8,4 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90843-71:
(7*9)+(6*0)+(5*8)+(4*4)+(3*3)+(2*7)+(1*1)=143
143 % 10 = 3
So 90843-71-3 is a valid CAS Registry Number.