256664-03-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256664-03-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,6,6 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 256664-03:
(8*2)+(7*5)+(6*6)+(5*6)+(4*6)+(3*4)+(2*0)+(1*3)=156
156 % 10 = 6
So 256664-03-6 is a valid CAS Registry Number.