57709-31-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57709-31-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,0 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57709-31:
(7*5)+(6*7)+(5*7)+(4*0)+(3*9)+(2*3)+(1*1)=146
146 % 10 = 6
So 57709-31-6 is a valid CAS Registry Number.