28771-99-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28771-99-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,7 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 28771-99:
(7*2)+(6*8)+(5*7)+(4*7)+(3*1)+(2*9)+(1*9)=155
155 % 10 = 5
So 28771-99-5 is a valid CAS Registry Number.