175521-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 175521-68-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,5,2 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 175521-68:
(8*1)+(7*7)+(6*5)+(5*5)+(4*2)+(3*1)+(2*6)+(1*8)=143
143 % 10 = 3
So 175521-68-3 is a valid CAS Registry Number.