57707-87-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57707-87-6 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 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57707-87:
(7*5)+(6*7)+(5*7)+(4*0)+(3*7)+(2*8)+(1*7)=156
156 % 10 = 6
So 57707-87-6 is a valid CAS Registry Number.