321904-80-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 321904-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,9,0 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 321904-80:
(8*3)+(7*2)+(6*1)+(5*9)+(4*0)+(3*4)+(2*8)+(1*0)=117
117 % 10 = 7
So 321904-80-7 is a valid CAS Registry Number.