19520-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19520-53-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,2 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19520-53:
(7*1)+(6*9)+(5*5)+(4*2)+(3*0)+(2*5)+(1*3)=107
107 % 10 = 7
So 19520-53-7 is a valid CAS Registry Number.