728931-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 728931-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,8,9,3 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 728931-56:
(8*7)+(7*2)+(6*8)+(5*9)+(4*3)+(3*1)+(2*5)+(1*6)=194
194 % 10 = 4
So 728931-56-4 is a valid CAS Registry Number.