3257-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3257-56-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,5 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 3257-56:
(6*3)+(5*2)+(4*5)+(3*7)+(2*5)+(1*6)=85
85 % 10 = 5
So 3257-56-5 is a valid CAS Registry Number.