57666-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57666-13-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,6 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57666-13:
(7*5)+(6*7)+(5*6)+(4*6)+(3*6)+(2*1)+(1*3)=154
154 % 10 = 4
So 57666-13-4 is a valid CAS Registry Number.