Storing Ll 37: Best Practices

Lyophilized Powder/Concentrate: Store frozen at -20°C. Stable for extended periods in lyophilized form.

Cream Formulation: Clinical-grade LL-37 cream maintains >90% active ingredient for up to 99 months at 4°C and 75 months at 28°C. Cream melts at 40°C — store below this threshold.

Reconstitution: Use sterile diluent (polyvinyl alcohol or bacteriostatic water). Use immediately or keep frozen to prevent degradation and aggregation.

Form: Synthetic peptide acetate salt via solid-phase peptide synthesis (SPPS); lyophilized sterile powder.

Purity: ≥90–110% content by HPLC (UV at 217 nm); identity confirmed by LC-MS.

Handling: Allow vials to warm to room temperature before opening to prevent moisture condensation.