401900-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 401900-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,9,0 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 401900-16:
(8*4)+(7*0)+(6*1)+(5*9)+(4*0)+(3*0)+(2*1)+(1*6)=91
91 % 10 = 1
So 401900-16-1 is a valid CAS Registry Number.