90202-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90202-97-4 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, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90202-97:
(7*9)+(6*0)+(5*2)+(4*0)+(3*2)+(2*9)+(1*7)=104
104 % 10 = 4
So 90202-97-4 is a valid CAS Registry Number.