16419-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16419-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,4,1 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 16419-55:
(7*1)+(6*6)+(5*4)+(4*1)+(3*9)+(2*5)+(1*5)=109
109 % 10 = 9
So 16419-55-9 is a valid CAS Registry Number.