good luck trying any chemical to get that off that won't strip your clear coat. the only thing i can think of is go to walmart, buy a buffer, and buff it out.
if your not feeling that brave.........pay the $80 or $90 to have someone else do it.
you sure its not your clear coat coming off??? is it flaking or peeling? what i mean is when you are scraping (i don't even wnat to know how you are doing that) it off does it come off in little or big pieces?