Make Concentrated Solutions of hydrophobic amino acids

[Sonal Patel]

Hi,

I need to make 1000x solutions of Valine, phenylalanine, tyrosine,
tryptophan, leucin and isoleucin. I tried to dissolve them in warm water
but they are insoluble. Can anyone help me how can I dissolve them in water
or suggest any other reagent.

Thanks.