30121-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30121-78-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,1,2 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 30121-78:
(7*3)+(6*0)+(5*1)+(4*2)+(3*1)+(2*7)+(1*8)=59
59 % 10 = 9
So 30121-78-9 is a valid CAS Registry Number.