19303-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19303-88-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,0 and 3 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19303-88:
(7*1)+(6*9)+(5*3)+(4*0)+(3*3)+(2*8)+(1*8)=109
109 % 10 = 9
So 19303-88-9 is a valid CAS Registry Number.