177028-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177028-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,0,2 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 177028-40:
(8*1)+(7*7)+(6*7)+(5*0)+(4*2)+(3*8)+(2*4)+(1*0)=139
139 % 10 = 9
So 177028-40-9 is a valid CAS Registry Number.