657-60-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 657-60-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,5 and 7 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 657-60:
(5*6)+(4*5)+(3*7)+(2*6)+(1*0)=83
83 % 10 = 3
So 657-60-3 is a valid CAS Registry Number.