55771-71-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55771-71-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,7 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55771-71:
(7*5)+(6*5)+(5*7)+(4*7)+(3*1)+(2*7)+(1*1)=146
146 % 10 = 6
So 55771-71-6 is a valid CAS Registry Number.