725-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 725-56-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 725-56:
(5*7)+(4*2)+(3*5)+(2*5)+(1*6)=74
74 % 10 = 4
So 725-56-4 is a valid CAS Registry Number.