19905-08-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19905-08-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 5 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19905-08:
(7*1)+(6*9)+(5*9)+(4*0)+(3*5)+(2*0)+(1*8)=129
129 % 10 = 9
So 19905-08-9 is a valid CAS Registry Number.