Method · 01
HPLC — reverse-phase purity
Waters Symmetry C18, 4.6 × 150 mm. 10→95% acetonitrile gradient over 8 minutes, 214 nm detection. Main peak integrated against named impurities ≥ 0.1%.
Threshold
≥ 99.0%
PEPTIQE products are sold exclusively as reference standards for qualified in vitro laboratory research. Every order carries a signed attestation, a batch-specific Certificate of Analysis, and end-to-end lot traceability.
Every PEPTIQE order requires explicit confirmation of the four statements below before payment can be authorized. We review and retain these attestations with the order record.
This is the same form you'll see at checkout. Orders without all four boxes checked cannot be submitted. Each attestation is timestamped and tied to the order's shipping record.
We ship to researchers, laboratories, and teaching institutions. If you don't fit one of these profiles, please don't place an order — orders inconsistent with this policy are cancelled and refunded.
Universities, teaching hospitals, national labs, and research foundations with established in vitro protocols.
Contract research organizations, biotech R&D teams, and commercial testing labs working on in vitro programs.
Qualified individual researchers 21 years of age or older, working on legitimate in vitro research projects.
Accredited graduate chemistry, biochemistry, and pharmacology programs using peptides for instructional laboratory work.
Nothing ships without passing through all four. If any gate fails, the entire lot is rejected — no partial releases, no exceptions.
SPPS on a validated resin system. Cleaved under inert atmosphere, precipitated, and lyophilized before any analytical handling.
Every lot is assayed by an independent analyst. Purity measured by RP-HPLC (214 nm); identity confirmed by ESI-MS within 0.1 Da.
Kinetic chromogenic LAL to USP <85>. Lots exceeding ten percent of the USP limit are rejected, not repackaged.
Two-person review. Lead QC signs the CoA; a second analyst verifies. The release event is written to the lot's traceability log.
We publish the exact method, instrument, and threshold behind every number on the Certificate of Analysis. Nothing is a marketing claim.
Waters Symmetry C18, 4.6 × 150 mm. 10→95% acetonitrile gradient over 8 minutes, 214 nm detection. Main peak integrated against named impurities ≥ 0.1%.
Waters SQ Detector 2, positive mode, leucine-enkephalin lock-spray calibration. Observed [M+H]⁺ matched against calculated mass and full isotope envelope.
Limulus Amebocyte Lysate, kinetic chromogenic assay to USP <85>. Full curve validation and positive product control on every plate.
The legal specifics — responsibilities, exclusions, and rights we reserve. Tap any section to expand it.
PEPTIQE products are not drugs. They are not approved by the FDA or any regulatory body for the diagnosis, treatment, cure, or prevention of any disease or condition, and are not intended for administration to humans or animals under any circumstance.
Our products are sold solely as reference standards for in vitro laboratory research. Any other use is strictly prohibited and outside the scope of this policy.
The purchaser assumes full responsibility for the lawful, safe, and appropriate handling of PEPTIQE products upon receipt. This includes compliance with all local, state, national, and institutional regulations governing the possession, handling, use, transport, storage, and disposal of research chemicals.
Where institutional safety review or IRB/IACUC oversight is required, the purchaser is responsible for securing those approvals before receipt of material.
Each batch is independently assayed by reverse-phase HPLC for purity and confirmed by ESI mass spectrometry for identity. A batch-specific Certificate of Analysis is emailed with every order, typically within 24 hours of fulfillment. Lots are fully traceable from synthesis source through to vial.
Retention samples are archived for a minimum of 24 months. If a customer disputes a CoA result, we will re-run the lot against the retain sample at no cost.
PEPTIQE reserves the right to refuse or cancel any order, at any time, for any reason. Orders suspected to be for purposes inconsistent with this policy — including resale, redistribution, or intended human consumption — will be cancelled and refunded in full.
Repeat attempts to circumvent this policy may result in permanent account restriction.
Not all PEPTIQE products are available in all jurisdictions. Shipping is restricted where local law prohibits import of the specific peptide, where a controlled-substance analogue designation applies, or where local institutional policy requires advance authorization.
Where unsure, contact our research team before placing an order — we will confirm availability and any documentation requirements for your jurisdiction.
We answer within one business day. Our research team can confirm jurisdictional restrictions, institutional billing, and custom documentation before you place an order.
Contact our research team