81230-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81230-97-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,3 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81230-97:
(7*8)+(6*1)+(5*2)+(4*3)+(3*0)+(2*9)+(1*7)=109
109 % 10 = 9
So 81230-97-9 is a valid CAS Registry Number.