402789-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402789-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,7,8 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 402789-89:
(8*4)+(7*0)+(6*2)+(5*7)+(4*8)+(3*9)+(2*8)+(1*9)=163
163 % 10 = 3
So 402789-89-3 is a valid CAS Registry Number.