40709-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40709-83-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,7,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40709-83:
(7*4)+(6*0)+(5*7)+(4*0)+(3*9)+(2*8)+(1*3)=109
109 % 10 = 9
So 40709-83-9 is a valid CAS Registry Number.