80709-72-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80709-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,7,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 80709-72:
(7*8)+(6*0)+(5*7)+(4*0)+(3*9)+(2*7)+(1*2)=134
134 % 10 = 4
So 80709-72-4 is a valid CAS Registry Number.