408521-43-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 408521-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,8,5,2 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 408521-43:
(8*4)+(7*0)+(6*8)+(5*5)+(4*2)+(3*1)+(2*4)+(1*3)=127
127 % 10 = 7
So 408521-43-7 is a valid CAS Registry Number.