Is my Chemistry GRE score good enough?

[raul.carmo]

I just got my chem GRE scores and the result was below my expectations. I scored 700 (50th percentile) and now I am not sure if this score will kill my application to a PhD program in chemistry. I am an international student from Brazil and my normal GRE scores are V:160, Q:154, W:3.0. My undergraduate GPA is 3.1 and my master's GPA is 3.7 (in Inorganic Chemistry). I also have no publications, only 2 presentations in small meetings and a manuscript in progress.

Am I competitive to any  PhD program in the US. I don't care too much about rankings, but I would like to get into a top 100 program, do you think I stand a chance?