28777-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28777-67-5 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 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28777-67:
(7*2)+(6*8)+(5*7)+(4*7)+(3*7)+(2*6)+(1*7)=165
165 % 10 = 5
So 28777-67-5 is a valid CAS Registry Number.