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SSL Secured/CoA Verified/≥99% Purity

Free U.S. shipping over $250/ Same-day dispatch before 2 PM ET/ CoA in every box/ ≥99% purity guaranteed/ Free U.S. shipping over $250/ Same-day dispatch before 2 PM ET/ CoA in every box/ ≥99% purity guaranteed/

Quality you can verify

Read the report,
not the marketing.

Every lot we release passes a four-method protocol at an independent U.S. lab — and the proof ships in the box. Pull any batch’s Certificate of Analysis below.

Certificate of Analysis

GHK-Cu 50 mg · LOT 24·0915 · REL 2026-05-28

RP-HPLC · 220 nm · main peak area 99.5%

AppearanceWhite lyophilized powderCONFORMS ✓

Purity (RP-HPLC)99.5% (spec ≥ 99.0%)PASS ✓

Identity (LC-MS)403.9 g/mol observedCONFIRMED ✓

Endotoxin (LAL)< 0.5 EU/mgPASS ✓

Residual moisture (KF)2.1% w/wPASS ✓

QC Release — ion. quality Released for research use only · not for human or veterinary use

The four-method release protocol

No lot ships until it clears all four. The measured values print on its CoA.

Method 01

RP-HPLC

Reverse-phase high-performance liquid chromatography quantifies purity as main-peak area% at 220 nm. Release spec: ≥ 99.0%.

Method 02

LC-MS

Mass spectrometry confirms molecular identity — the observed mass must match the compound’s theoretical mass.

Method 03

LAL Assay

Limulus amebocyte lysate screening for bacterial endotoxin. Release spec: < 0.5 EU/mg.

Method 04

Karl Fischer

Coulometric titration measures residual moisture in the lyophilized cake — a key stability indicator.

From synthesis to your bench

U.S. synthesis

Solid-phase synthesis and lyophilization at our U.S. partner facility.

Independent testing

Every lot sampled and analyzed by a third-party analytical lab.

QC release

Lot released only when all four methods pass spec. CoA generated.

Same-day dispatch

Orders before 2 PM ET ship the same day, CoA in the box.

Questions, answered

Are your compounds third-party tested? +

Yes. Every batch is independently analyzed — RP-HPLC for purity, LC-MS for identity, LAL for endotoxin, and Karl Fischer for residual moisture. The batch-matched Certificate of Analysis ships in the box and is retrievable by lot number above.

What does “≥99% purity guaranteed” mean? +

It’s the minimum HPLC main-peak area we release at. The measured value for your specific lot is printed on its CoA — our current catalog average is 99.4%.

How fast do orders ship? +

Orders placed before 2:00 PM ET dispatch the same business day from our U.S. facility, with cold-chain packaging where required and full reshipment coverage.

What are these products intended for? +

All products are sold strictly for research and laboratory use only. They are not intended for human or veterinary use, diagnosis, or treatment.

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Read the report,not the marketing.