57247-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57247-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,4 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57247-55:
(7*5)+(6*7)+(5*2)+(4*4)+(3*7)+(2*5)+(1*5)=139
139 % 10 = 9
So 57247-55-9 is a valid CAS Registry Number.