39999-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39999-19-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,9 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 39999-19:
(7*3)+(6*9)+(5*9)+(4*9)+(3*9)+(2*1)+(1*9)=194
194 % 10 = 4
So 39999-19-4 is a valid CAS Registry Number.