81393-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81393-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,9 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81393-44:
(7*8)+(6*1)+(5*3)+(4*9)+(3*3)+(2*4)+(1*4)=134
134 % 10 = 4
So 81393-44-4 is a valid CAS Registry Number.