19339-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19339-54-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,3 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19339-54:
(7*1)+(6*9)+(5*3)+(4*3)+(3*9)+(2*5)+(1*4)=129
129 % 10 = 9
So 19339-54-9 is a valid CAS Registry Number.