556803-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 556803-28-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,6,8,0 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 556803-28:
(8*5)+(7*5)+(6*6)+(5*8)+(4*0)+(3*3)+(2*2)+(1*8)=172
172 % 10 = 2
So 556803-28-2 is a valid CAS Registry Number.