28739-41-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28739-41-5 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 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 28739-41:
(7*2)+(6*8)+(5*7)+(4*3)+(3*9)+(2*4)+(1*1)=145
145 % 10 = 5
So 28739-41-5 is a valid CAS Registry Number.