55768-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55768-69-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,6 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55768-69:
(7*5)+(6*5)+(5*7)+(4*6)+(3*8)+(2*6)+(1*9)=169
169 % 10 = 9
So 55768-69-9 is a valid CAS Registry Number.