256949-59-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256949-59-4 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 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 256949-59:
(8*2)+(7*5)+(6*6)+(5*9)+(4*4)+(3*9)+(2*5)+(1*9)=194
194 % 10 = 4
So 256949-59-4 is a valid CAS Registry Number.