How should I dissolve and store peptide solution?

How should I dissolve and store peptide solution？

Dissolve peptides in an appropriate buffer: acidic peptides in basic buffer and basic peptides in acidic buffer. If necessary, sonicate briefly.

Peptides containing Trp, Met or Cys require special care to avoid oxidation. Oxygen-free water or reducing agents may be used.

For storage, peptide solutions should be aliquoted and kept frozen at -20°C. Most peptides containing Trp, Met, Cys, Asn or Gln have limited shelf life. Long-term storage is not recommended