23011-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23011-84-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,1 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 23011-84:
(7*2)+(6*3)+(5*0)+(4*1)+(3*1)+(2*8)+(1*4)=59
59 % 10 = 9
So 23011-84-9 is a valid CAS Registry Number.