109934-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109934-16-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,3 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 109934-16:
(8*1)+(7*0)+(6*9)+(5*9)+(4*3)+(3*4)+(2*1)+(1*6)=139
139 % 10 = 9
So 109934-16-9 is a valid CAS Registry Number.