57717-85-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57717-85-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,1 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57717-85:
(7*5)+(6*7)+(5*7)+(4*1)+(3*7)+(2*8)+(1*5)=158
158 % 10 = 8
So 57717-85-8 is a valid CAS Registry Number.