84809-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84809-90-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,8,0 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 84809-90:
(7*8)+(6*4)+(5*8)+(4*0)+(3*9)+(2*9)+(1*0)=165
165 % 10 = 5
So 84809-90-5 is a valid CAS Registry Number.