Well if it isn't they just discontinued it in the last week. I just bought some. The paint remover I use is in a brown can. It is just standard paint remover.
I'd be curious to know exactly what you used because the EPA banned methylene chloride or whatever the chemical was called that was in paint strippers. This was a year or two ago?
I haven't been able to find a paint stripper that'll even put a dent in automotive paint since.