872409-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 872409-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,4,0 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 872409-89:
(8*8)+(7*7)+(6*2)+(5*4)+(4*0)+(3*9)+(2*8)+(1*9)=197
197 % 10 = 7
So 872409-89-7 is a valid CAS Registry Number.