28871-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28871-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,7 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28871-77:
(7*2)+(6*8)+(5*8)+(4*7)+(3*1)+(2*7)+(1*7)=154
154 % 10 = 4
So 28871-77-4 is a valid CAS Registry Number.