81373-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81373-89-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,7 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81373-89:
(7*8)+(6*1)+(5*3)+(4*7)+(3*3)+(2*8)+(1*9)=139
139 % 10 = 9
So 81373-89-9 is a valid CAS Registry Number.