55665-69-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55665-69-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,6 and 5 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55665-69:
(7*5)+(6*5)+(5*6)+(4*6)+(3*5)+(2*6)+(1*9)=155
155 % 10 = 5
So 55665-69-5 is a valid CAS Registry Number.