17717-38-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17717-38-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,1 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 17717-38:
(7*1)+(6*7)+(5*7)+(4*1)+(3*7)+(2*3)+(1*8)=123
123 % 10 = 3
So 17717-38-3 is a valid CAS Registry Number.