802839-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 802839-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,2,8,3 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 802839-28:
(8*8)+(7*0)+(6*2)+(5*8)+(4*3)+(3*9)+(2*2)+(1*8)=167
167 % 10 = 7
So 802839-28-7 is a valid CAS Registry Number.