802009-74-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 802009-74-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,2,0,0 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 802009-74:
(8*8)+(7*0)+(6*2)+(5*0)+(4*0)+(3*9)+(2*7)+(1*4)=121
121 % 10 = 1
So 802009-74-1 is a valid CAS Registry Number.