- COA published for every lot
- Free 2-day shipping
Full purity.
Not full price.
Third-party tested research peptides with a lot-specific COA, 99%+ purity, and free 2-day shipping. Premium-grade compounds for labs that want to push further — without paying for the logo.
Avg. purity
99.57%+
Verified by
HPLC + MS
Dispatch
Same day
Featured peptide
GS3-RT
The newest and most exciting research compound in the world, available now in multiple quantities. At a price almost 50% less than the competition, your next research project is within reach.
- Verified purity of over 99%
- Quantities available from 10 - 60mg
- COA for every vial posted in the library
Featured catalog
Research compounds
ready to ship
A focused selection from our catalog — each with published purity, a lot number, and a downloadable Certificate of Analysis.
99.19%
LOT GS-100410702
GLUCAGON LIKE PEPTIDE
GS3 RT
GLP receptor triple agonist for metabolic research: GLP, GIP, and Glucagon mechanisms.
Size 10 mg
Purity 99.19%
$45/vial
99.61%
LOT GS-10010524
ANGIOGENESIS
BPC-157
Body-protection compound studied in angiogenesis and tissue-repair models.
Size 10 mg
Purity 99.61%
$25/vial
5.7 pH
LOT GS-20011
reconstitution solution
Bacteriostatic Water
Sterile water with 0.9% benzyl alcohol added to prevent bacterial growth in the medium during research.
Size 30 ml
H-Brand
$25/vial
01 / The problem
Same molecule.
Totally different standard.
Most suppliers make you pick: order blind and hope, or pay a premium for paperwork. Purity is a variable — we remove it from your experiment.
Ordering blind
- Generic COA reused across batches — or none at all
- “High purity” claims with no measured figure
- Premium pricing to cover middle-man markups
- Bubble mailer, paid shipping, slow dispatch
- Vials re-handled after testing
Ordering with proof
One lot, one COA
Every vial maps to its own published certificate.
A real number, 99%+ average
HPLC purity and MS identity — no rounding up.
Value-priced, direct
No markups for the documentation you should already get.
Free 2-day, same-day dispatch
Custom layered packaging, tracking included.
Last Touch Testing
Testing is the final hand on the vial before it reaches you.
02 / The catalog
Compounds your protocol can count on.
Every research compound is synthesized to specification, tested independently, and labeled with a traceable lot number before it leaves our Tampa facility.
Destination 01
Lyophilized peptides
Freeze-dried for long-term stability and sealed in tamper-evident vials. Shelf-stable in transit.
Destination 02
COA library
Every active lot’s Certificate of Analysis, published before the lot goes on sale. Match the number on your vial in seconds.
The full catalog
Shop it all.
Browse every compound with its documentation linked right on the listing.
- COA linked on every listing
- Free 2-day shipping, no minimum
- Automatic quantity discounts
- 99%+ average purity
03 / Analytical method
Every lot is characterized before release.
We don’t ship on a supplier’s word. Each batch goes to an independent laboratory as the last touch before it reaches you — and the results are yours to read.
Purity by chromatography
High-performance liquid chromatography quantifies the main peak against impurities and degradation products.
Identity by mass spectrometry
Observed molecular mass is confirmed against the theoretical value for the target sequence.
Batch-level traceability
Every vial label carries a lot number that maps to its synthesis record and analytical data.
Published certificate
Chromatogram, spectra, and pass/fail results are posted to the COA library and printed in your box.
Certificate of Analysis
|
TEST
|
METHOD
|
SPEC
|
RESULT
|
|---|---|---|---|
|
Purity
|
HPLC
|
>98%
|
99.57%
|
|
Identity
|
ESI-MS
|
Match
|
Pass
|
|
Appearance
|
Visual
|
Lyophilized powder
|
Pass
|
|
Net Content
|
Gravimetric
|
Specified MG
|
Pass
|
04 / Chain of custody
Synthesis to bench in five checkpoints.
Nothing skips the line. Every batch clears the same five gates, every time.
Synthesis
Compounds are synthesized to the target sequence, lyophilized, and assigned a lot number.
Independent analysis
Samples go to a third-party US lab for HPLC purity and MS identity testing.
Review & release
Results are checked against spec. Anything under 98% is rejected — not discounted.
COA published
The certificate goes live in the COA library before the lot is listed for sale.
Fast dispatch
Order before 12pm ET and it ships same day — free, 2-day, tracked, with a printed COA inside.
Average purity
Verified across the catalog. 98% minimum to list.
COA database
To ensure our manufacturers live up to the cGMP standard.
1:1
COA per lot
One lot, one certificate. Never reused.
Shipping
Free 2-day on every order. No threshold.
05 / How we compare
Research-grade quality.
Without the markup.
Documentation and fair pricing shouldn’t be a trade-off. Here’s how GreySyn stacks up.
GreySyn vs. typical research-compound suppliers
Criteria
GreySyn
Typical supplier
Premium brand
Third-party testing
- Every lot, US lab
- Occasional or in-house
- Every lot
Certificate of Analysis
- Lot-specific, published + printed
- Generic, reused
- Lot-specific
Purity
- 99%+ average, 98% minimum
- “High purity,” unstated
- ≥98–99%
Packaging
- Layered custom inserts, tamper-evident
- Bubble mailer
- Bubble mailer
Shipping
- Free 2-day, same-day dispatch
- Paid, slow dispatch
- Free over a threshold
Pricing
- Value-priced, direct
- Fake BOGOs and sales
- 40–100% higher
06 / Lab protocols
Protect the integrity of your research.
Material quality depends on handling after delivery, too. Follow these storage guidelines to keep the stability documented on your COA.
Temperature control
Store lyophilized material frozen for long-term storage, refrigerated for short-term. Equilibrate to room temperature before opening.
Moisture protection
Keep vials tightly sealed. Moisture exposure accelerates degradation of hygroscopic lyophilized peptides.
Light protection
Store away from direct light in original or amber packaging to limit photodegradation of sensitive residues.
Aseptic technique
Use clean, calibrated equipment and record lot numbers with every experiment for full traceability.
07 / FAQ
Straight answers. No fine print.
Can’t find what you need? Our support team answers documentation and order questions every business day.
How is compound purity verified?
Every lot is sampled and sent to an independent, US-based third-party laboratory. Purity is measured by high-performance liquid chromatography (HPLC) and identity is confirmed by mass spectrometry (MS). The results are issued as a lot-specific Certificate of Analysis.
Does every order include a Certificate of Analysis?
Yes. A printed COA ships inside every order so you can match the lot number on the vial to the certificate on your bench. The same COA is published in our COA library before the lot goes on sale.
What happens if a lot fails specification?
It never reaches the catalog. Lots that fall below our 98% purity threshold or fail identity confirmation are rejected — they are not discounted, relabeled, or sold.
How fast do orders ship?
Orders placed before 12pm ET on business days typically dispatch the same day from Tampa, Florida. Every order ships 2-day with tracking, free — no minimum spend.
Why are your prices lower if the testing is the same?
We sell direct, skip the layers of middle-men, and keep our catalog focused. You pay for the compound and the proof — not for a markup on documentation you should already get.
Are these products for human or veterinary use?
No. All GreySyn products are sold strictly for in-vitro laboratory research by qualified researchers. Read our RUO & FDA disclaimers for full details.
Ready when you are
Start your next breakthrough.
Browse compounds with their Certificates of Analysis attached, or ask our team about bulk quantities and sourcing compounds not listed.
