256945-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256945-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,9,4 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 256945-18:
(8*2)+(7*5)+(6*6)+(5*9)+(4*4)+(3*5)+(2*1)+(1*8)=173
173 % 10 = 3
So 256945-18-3 is a valid CAS Registry Number.