How we characterise every lot.
Every reference standard passes a four-step verification chain before we release it for sale. The COA travels with the vial and is mirrored in our public library.
Solid-phase synthesis at audited GMP-aligned partner facilities. Crude material is purified to specification before lyophilization.
Sterile freeze-drying under inert atmosphere into amber-glass, butyl-stoppered, aluminium-crimped vials.
An independent Canadian analytical lab confirms identity (mass within ±0.5 Da of theoretical) and assay purity by RP-HPLC at 220 nm.
Water content by Karl-Fischer titration (≤ 6.0% w/w). Residual solvents profiled by GC-headspace against ICH Q3C limits.
LAL test on representative units; specification < 5 EU/mg.
Lot is released only when COA matches the specification table. Document is published in the public library and shipped with the vial.