305849-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 305849-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,5,8,4 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 305849-21:
(8*3)+(7*0)+(6*5)+(5*8)+(4*4)+(3*9)+(2*2)+(1*1)=142
142 % 10 = 2
So 305849-21-2 is a valid CAS Registry Number.