Purity is a claim until someone measures it. Every SpecPep material is synthesized
in a U.S. cGMP facility, purified to ≥99% by HPLC, identity-confirmed by mass spectrometry, endotoxin
and sterility screened, and shipped with the Certificate of Analysis for that exact lot.
For qualified laboratory research onlyNo human or animal use
01
U.S. cGMP facilityDocumented quality system
02
HPLC + mass spec≥99% purity, identity confirmed
03
Endotoxin & sterilityLAL and USP <71>, every lot
04
USA made & shippedSame-day on in-stock
U.S. cGMP FACILITY✦≥99% HPLC✦MASS-SPEC IDENTITY✦ENDOTOXIN SCREENED✦STERILITY VERIFIED✦COA ON EVERY LOT✦U.S. cGMP FACILITY✦≥99% HPLC✦MASS-SPEC IDENTITY✦ENDOTOXIN SCREENED✦STERILITY VERIFIED✦COA ON EVERY LOT
FACILITYU.S. cGMPDocumented, auditable quality system
FULFILLMENTSame-dayOn in-stock items, shipped from the USA
Material, in focus
A clearer point of view.
Eighty-six research materials, each published with its CAS number, molecular formula, molecular
weight and release specification — and each released against the same five-point testing panel.
MATERIAL SERIES / 03BPC-157 ≥99% HPLCCagrilintide ≥99% HPLCRetatrutide ≥99% HPLC
Why it's different
We hold every lot to more than a purity number.
Purity is the headline, but a released lot also has to prove identity, cleanliness and accuracy.
That is the difference between a supplier you can audit and one you simply have to trust.
Mass spectrometry confirms you received the exact compound. A high-purity unknown is not good enough, and purity testing alone cannot tell the two apart.
MS02 / CLEANLINESS
Contaminant screening.
Endotoxin (LAL) and USP <71> sterility screening on every lot. Non-negotiable for cell-based work, where LPS will silently produce the wrong result.
LAL03 / INDEPENDENCE
Third-party verified.
Release testing performed by ISO/IEC 17025 accredited laboratories. Independent results, not self-report, with chain of custody available on request.
17025
Catalog
Most requested materials.
Full specification on every product. Lot-specific Certificate of Analysis
with every order. Research use only.
Release is a sequence, not a single check. Each lot must pass all six gates below before it is
eligible to ship. Fail any one and the lot is held, investigated, and never shipped — only
conforming material reaches inventory.
Qualified raw materials, identity-checked with a COA on file, assembled into sequence on automated synthesizers under controlled coupling cycles, then cleaved and precipitated.
04–05
Purification
Purified by preparative reverse-phase HPLC to a ≥99% specification, target peak collected and fraction-verified, then lyophilized to a stable, low-moisture powder.
06–08
Fill & release
Vialed, capped and sealed in a controlled environment to ±0.5% fill weight, run through the five-point QC panel, and released only with a lot-specific COA and batch record.
Quality documentation
Every lot ships fully documented.
The same comprehensive testing panel on every batch — every lot, every time, at retail and at
wholesale scale.
01
HPLC purity analysis
99%+ required. Every batch run through reverse-phase HPLC before shipping, with the chromatogram reproduced in the COA.
02
Mass-spec identity
Molecular identity confirmed by mass spectrometry — the right compound, not just a high-purity unknown.
03
Endotoxin screening
Every batch independently screened for LPS contamination by LAL assay, with a numeric EU/mg result.
04
Sterility screening
Screened for microbial growth to a USP <71> standard before a lot is cleared for release.
05
Fill weight verification
Each vial verified against label claim within ±0.5%, with batch-level quantification retained on file.
06
Independent lab testing
Release testing by ISO/IEC 17025 accredited third-party laboratories, chain of custody on request.
Standards & accreditation
The framework behind the product.
Consistency at scale comes from systems, not luck. These are the standards our manufacturing
and testing operate within.
Synthesized in a United States facility operating under current Good Manufacturing Practice controls.
ISO 9001:2015
Quality management system
Production runs inside an ISO 9001:2015 framework — controlled, documented and auditable.
ISO/IEC 17025
Accredited testing
Release testing by accredited third-party laboratories. Independent verification, not self-report.
Partner program
Earn on every researcher you send us.
Commission from 10% to 35% as your volume grows, a 30-day cookie, monthly payouts, and a rate
that never drops once you have earned it. Free to join, reviewed within one business day.
No dosing, therapeutic, clinical or personal-use information is provided.
COA lookup
Find a lot record.
Enter a lot number to request its documentation from the SpecPep quality team.
Documentation list
Build a procurement list.
S
Research materials
Before you enter.
SpecPep supplies materials exclusively for lawful laboratory and analytical research. They are sold
in lyophilized form, require reconstitution by qualified personnel, and are not for human or animal
consumption, clinical, diagnostic, therapeutic, cosmetic or veterinary use. No dosing or usage
instructions are provided.
