256428-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256428-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,4,2 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 256428-16:
(8*2)+(7*5)+(6*6)+(5*4)+(4*2)+(3*8)+(2*1)+(1*6)=147
147 % 10 = 7
So 256428-16-7 is a valid CAS Registry Number.