256377-77-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256377-77-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,3,7 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 256377-77:
(8*2)+(7*5)+(6*6)+(5*3)+(4*7)+(3*7)+(2*7)+(1*7)=172
172 % 10 = 2
So 256377-77-2 is a valid CAS Registry Number.