556811-66-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 556811-66-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,6,8,1 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 556811-66:
(8*5)+(7*5)+(6*6)+(5*8)+(4*1)+(3*1)+(2*6)+(1*6)=176
176 % 10 = 6
So 556811-66-6 is a valid CAS Registry Number.