3280-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3280-55-5 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, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3280-55:
(6*3)+(5*2)+(4*8)+(3*0)+(2*5)+(1*5)=75
75 % 10 = 5
So 3280-55-5 is a valid CAS Registry Number.