90202-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90202-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,0 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90202-20:
(7*9)+(6*0)+(5*2)+(4*0)+(3*2)+(2*2)+(1*0)=83
83 % 10 = 3
So 90202-20-3 is a valid CAS Registry Number.