405894-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 405894-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,5,8,9 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 405894-21:
(8*4)+(7*0)+(6*5)+(5*8)+(4*9)+(3*4)+(2*2)+(1*1)=155
155 % 10 = 5
So 405894-21-5 is a valid CAS Registry Number.