409321-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 409321-18-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,9,3,2 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 409321-18:
(8*4)+(7*0)+(6*9)+(5*3)+(4*2)+(3*1)+(2*1)+(1*8)=122
122 % 10 = 2
So 409321-18-2 is a valid CAS Registry Number.