28647-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28647-13-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,4 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 28647-13:
(7*2)+(6*8)+(5*6)+(4*4)+(3*7)+(2*1)+(1*3)=134
134 % 10 = 4
So 28647-13-4 is a valid CAS Registry Number.