17939-10-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17939-10-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,3 and 9 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17939-10:
(7*1)+(6*7)+(5*9)+(4*3)+(3*9)+(2*1)+(1*0)=135
135 % 10 = 5
So 17939-10-5 is a valid CAS Registry Number.