320776-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 320776-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,0,7,7 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 320776-89:
(8*3)+(7*2)+(6*0)+(5*7)+(4*7)+(3*6)+(2*8)+(1*9)=144
144 % 10 = 4
So 320776-89-4 is a valid CAS Registry Number.