2307-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2307-19-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,3,0 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2307-19:
(6*2)+(5*3)+(4*0)+(3*7)+(2*1)+(1*9)=59
59 % 10 = 9
So 2307-19-9 is a valid CAS Registry Number.