957513-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 957513-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,5,1 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 957513-20:
(8*9)+(7*5)+(6*7)+(5*5)+(4*1)+(3*3)+(2*2)+(1*0)=191
191 % 10 = 1
So 957513-20-1 is a valid CAS Registry Number.