17958-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17958-05-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,5 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 17958-05:
(7*1)+(6*7)+(5*9)+(4*5)+(3*8)+(2*0)+(1*5)=143
143 % 10 = 3
So 17958-05-3 is a valid CAS Registry Number.