309280-45-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309280-45-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,2,8 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 309280-45:
(8*3)+(7*0)+(6*9)+(5*2)+(4*8)+(3*0)+(2*4)+(1*5)=133
133 % 10 = 3
So 309280-45-3 is a valid CAS Registry Number.