5189-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5189-71-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,8 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5189-71:
(6*5)+(5*1)+(4*8)+(3*9)+(2*7)+(1*1)=109
109 % 10 = 9
So 5189-71-9 is a valid CAS Registry Number.