309950-99-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309950-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,5 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 309950-99:
(8*3)+(7*0)+(6*9)+(5*9)+(4*5)+(3*0)+(2*9)+(1*9)=170
170 % 10 = 0
So 309950-99-0 is a valid CAS Registry Number.