28734-89-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28734-89-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,3 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 28734-89:
(7*2)+(6*8)+(5*7)+(4*3)+(3*4)+(2*8)+(1*9)=146
146 % 10 = 6
So 28734-89-6 is a valid CAS Registry Number.