What is the meaning of the riddle "A5402" ?

Question

Someone asked me to solve it... a friend of mine.

it's been days && i still have no clue.

any help?

A5402

Answer 1

No good guess.  If your friend is a computer scientist, the hex value of A5402 is 676866, and in ASCII, 67/68/66 is CDB, a common letterspeak riddle for "See the bee?"  But that seems like a long shot at best.

Answer 2

Best I can come up with is L-2-Amino-3-guanidinopropionic acid hydrochloride

Answer 3

If you type it in google it gives you this page

http://www.sigmaaldrich.com/catalog/sear...

A5402

Sigma  L-2-Amino-3-guanidinopropionic acid hydrochloride

♣

Answer 4

547C8300

Answer 5

http://foryou.digs.it

you can get much information in this website, If you will check anyone blue link in website.