170728-03-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170728-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,7,2 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 170728-03:
(8*1)+(7*7)+(6*0)+(5*7)+(4*2)+(3*8)+(2*0)+(1*3)=127
127 % 10 = 7
So 170728-03-7 is a valid CAS Registry Number.