405555-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 405555-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,5,5,5 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 405555-31:
(8*4)+(7*0)+(6*5)+(5*5)+(4*5)+(3*5)+(2*3)+(1*1)=129
129 % 10 = 9
So 405555-31-9 is a valid CAS Registry Number.