203392-53-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203392-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,3,9 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 203392-53:
(8*2)+(7*0)+(6*3)+(5*3)+(4*9)+(3*2)+(2*5)+(1*3)=104
104 % 10 = 4
So 203392-53-4 is a valid CAS Registry Number.