163394-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 163394-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,3,9 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 163394-40:
(8*1)+(7*6)+(6*3)+(5*3)+(4*9)+(3*4)+(2*4)+(1*0)=139
139 % 10 = 9
So 163394-40-9 is a valid CAS Registry Number.