556801-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 556801-68-4 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 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 556801-68:
(8*5)+(7*5)+(6*6)+(5*8)+(4*0)+(3*1)+(2*6)+(1*8)=174
174 % 10 = 4
So 556801-68-4 is a valid CAS Registry Number.