Quality Control

Every lot passes the same release gate before a single vial is listed as available.

1. Synthesis & purification — solid-phase synthesis followed by preparative HPLC.
2. Purity — analytical RP-HPLC; release requires ≥ 98% main-peak area.
3. Identity — independent mass spectrometry confirms observed vs theoretical mass.
4. Fill & seal — lyophilized into USP Type I glass under inert gas; cake inspected visually.
5. Documentation — lot code printed per fill and linked to its certificate.

Material that fails any stage is not released.