81547-69-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81547-69-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,4 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81547-69:
(7*8)+(6*1)+(5*5)+(4*4)+(3*7)+(2*6)+(1*9)=145
145 % 10 = 5
So 81547-69-5 is a valid CAS Registry Number.