3280-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3280-17-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,8 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3280-17:
(6*3)+(5*2)+(4*8)+(3*0)+(2*1)+(1*7)=69
69 % 10 = 9
So 3280-17-9 is a valid CAS Registry Number.