256509-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256509-19-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,5,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 256509-19:
(8*2)+(7*5)+(6*6)+(5*5)+(4*0)+(3*9)+(2*1)+(1*9)=150
150 % 10 = 0
So 256509-19-0 is a valid CAS Registry Number.