71420-09-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71420-09-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,4,2 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71420-09:
(7*7)+(6*1)+(5*4)+(4*2)+(3*0)+(2*0)+(1*9)=92
92 % 10 = 2
So 71420-09-2 is a valid CAS Registry Number.