304902-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 304902-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,4,9,0 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 304902-05:
(8*3)+(7*0)+(6*4)+(5*9)+(4*0)+(3*2)+(2*0)+(1*5)=104
104 % 10 = 4
So 304902-05-4 is a valid CAS Registry Number.