17943-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17943-58-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,4 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 17943-58:
(7*1)+(6*7)+(5*9)+(4*4)+(3*3)+(2*5)+(1*8)=137
137 % 10 = 7
So 17943-58-7 is a valid CAS Registry Number.