16740-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16740-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,7,4 and 0 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 16740-47:
(7*1)+(6*6)+(5*7)+(4*4)+(3*0)+(2*4)+(1*7)=109
109 % 10 = 9
So 16740-47-9 is a valid CAS Registry Number.