664320-58-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664320-58-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,2 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664320-58:
(8*6)+(7*6)+(6*4)+(5*3)+(4*2)+(3*0)+(2*5)+(1*8)=155
155 % 10 = 5
So 664320-58-5 is a valid CAS Registry Number.