309922-16-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309922-16-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,2 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 309922-16:
(8*3)+(7*0)+(6*9)+(5*9)+(4*2)+(3*2)+(2*1)+(1*6)=145
145 % 10 = 5
So 309922-16-5 is a valid CAS Registry Number.