55709-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55709-80-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,0 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55709-80:
(7*5)+(6*5)+(5*7)+(4*0)+(3*9)+(2*8)+(1*0)=143
143 % 10 = 3
So 55709-80-3 is a valid CAS Registry Number.