457100-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 457100-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,1,0 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 457100-57:
(8*4)+(7*5)+(6*7)+(5*1)+(4*0)+(3*0)+(2*5)+(1*7)=131
131 % 10 = 1
So 457100-57-1 is a valid CAS Registry Number.