19997-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19997-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,9 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19997-44:
(7*1)+(6*9)+(5*9)+(4*9)+(3*7)+(2*4)+(1*4)=175
175 % 10 = 5
So 19997-44-5 is a valid CAS Registry Number.