81549-90-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81549-90-8 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 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81549-90:
(7*8)+(6*1)+(5*5)+(4*4)+(3*9)+(2*9)+(1*0)=148
148 % 10 = 8
So 81549-90-8 is a valid CAS Registry Number.