5687-17-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5687-17-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,8 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5687-17:
(6*5)+(5*6)+(4*8)+(3*7)+(2*1)+(1*7)=122
122 % 10 = 2
So 5687-17-2 is a valid CAS Registry Number.