HPLC purity analysis
Reverse-phase HPLC on every batch against a ≥99.0% release specification, with the chromatogram reproduced on the COA.
Quality documentation
Certificate of Analysis library.
Every lot we ship is HPLC-verified and independently tested. Request the Certificate of Analysis for any material in the catalog — the exact report that ships with the order.
FACILITYU.S. cGMPDocumented, auditable quality system
HPLC MINIMUM99%+Release specification, every lot
TESTINGISO/IEC 17025Accredited third-party laboratories
FULFILLMENTSame-dayOn in-stock items, shipped from the USA
The testing panel
Five checks, every lot, no exceptions.
Each one answers a different question. Together they are the difference between a supplier you can audit and one you have to trust.
Mass-spectrometry identity
Molecular identity confirmed by mass spectrometry — the check that separates the correct compound from a high-purity unknown.
Endotoxin screening (LAL)
Independent LAL screening for lipopolysaccharide on every batch, reported as a numeric EU/mg value.
Sterility screening
Screened for microbial growth to a USP <71> standard before a lot is cleared for release.
Fill-weight verification
Each vial verified against label claim within ±0.5%, with batch-level quantification retained.
Independent laboratory testing
Release testing performed by ISO/IEC 17025 accredited third-party laboratories, chain of custody on request.
COA library
Find documentation by material.
Request the current Certificate of Analysis for any catalog item. Archived and batch-level records are available to wholesale accounts on request.
| Material | CAS | REF | Spec | Documentation |
|---|
Looking for endotoxin or residual solvent reports?
Every wholesale order includes lot-specific LAL endotoxin documentation. Contact your account manager
for archived, batch-level, residual solvent or heavy metals records.
Full quality assurances
Eighteen commitments, on every lot.
Not a summary — the complete set of controls, standards and documentation that apply to every material we ship.
US cGMP manufacturing
Synthesized in a United States facility operating under current Good Manufacturing Practice controls, inside a documented and inspectable quality system.
ISO 9001:2015 quality system
Production runs within an ISO 9001:2015 quality-management framework — controlled, documented and auditable end to end.
ISO/IEC 17025 accredited testing
Release testing performed by ISO/IEC 17025:2017 accredited third-party laboratories. Independent verification, not self-report.
≥99% HPLC purity
Reverse-phase HPLC on every batch against a ≥99.0% release specification, with the chromatogram reproduced on the Certificate of Analysis.
Mass-spectrometry identity
Molecular identity confirmed by mass spectrometry on every lot — the check that separates the right compound from a high-purity unknown.
Endotoxin screening (LAL)
Every batch independently screened for lipopolysaccharide by Limulus amebocyte lysate assay, with a numeric EU/mg result reported.
Sterility screening
Screened for microbial growth against the USP <71> standard before a lot is cleared for release.
Fill-weight verification
Every vial verified against label claim within ±0.5%, with batch-level quantification data retained on file.
Residual solvent reporting
Residual solvent data available on request, including trifluoroacetic acid carried over from preparative purification.
Heavy metals testing
Heavy metals screening available on request for wholesale accounts and any lot destined for regulated downstream work.
Lot-level traceability
Every vial ties back to a batch record and a lot-specific Certificate of Analysis, retained and available to partners.
Chain of custody
Chain of custody documentation available on request, evidencing that the sample tested is the sample shipped.
Qualified raw materials
Incoming raw materials are identity-checked with a supplier Certificate of Analysis on file before entering synthesis.
Controlled fill environment
Vialing, capping and sealing performed in a controlled environment under documented procedure.
Release gating
Fail any release gate and the lot is held, investigated and never shipped. Only conforming material reaches inventory.
Bulk COA access
Bulk and repeat accounts receive batched Certificate of Analysis downloads across every lot supplied, not one document at a time.
USA made & shipped
Manufactured and fulfilled from the United States, with same-day dispatch on in-stock items.
Advance availability notice
Bulk accounts and partners receive advance notice of new compound availability and restocks before public listing.
The comparison nobody publishes
What "lab tested" usually leaves out.
Every supplier in this category says the same four words. Bring this table to any supplier and ask them to fill in their column.
| What you get | SpecPep | Typical research peptide supplier |
|---|---|---|
| Certificate of Analysis | Lot-specific, with every order | Often a generic "representative" COA |
| HPLC chromatogram | Reproduced on the COA | Purity percentage only |
| Mass-spec identity | Confirmed m/z on every lot | Frequently not performed |
| Endotoxin result | Numeric EU/mg by LAL | "Endotoxin tested", no value |
| Sterility | USP <71> named standard | "Sterile" as an adjective |
| Fill-weight verification | ±0.5% of label claim | Rarely reported |
| Who tests it | ISO/IEC 17025 third party | In-house, self-reported |
| Residual solvent / heavy metals | Available on request | Not offered |
| Full specification published | CAS, formula, MW, sequence per product | Name and size only |
| Research context per compound | Documented, cited research uses | Vague benefit language |
| Partner program | 10–35%, 30-day cookie, tier locked for life | Flat 5–10% or none |
| Compliance posture | Strict RUO, no dosing guidance ever | Varies; often ambiguous |
