You're buying from the lab,
not the middleman.
Vesta is a research-peptide manufacturer based in Guangzhou. We synthesize, purify, lyophilize and ship every vial ourselves — which is why our prices are 30–40% below US resellers buying the same molecules from facilities like ours.
From synthesis to your lab door
Six steps. Every vial in the catalog has been through all of them. The chromatogram you download with your order is from the actual batch in your hand — not a sample.
Solid-phase peptide synthesis
Resin-bound assembly using Fmoc chemistry. Each amino acid coupling is monitored by Kaiser test.
CSBio CS136X automated synthesizer
Cleavage and crude precipitation
TFA cleavage cocktail releases the peptide; cold diethyl ether precipitates the crude product.
Preparative HPLC purification
Reverse-phase chromatography on C18 column. Only fractions ≥99% purity move forward.
Waters Prep 150 LC · C18 50×250 mm
Lyophilization
Sterile-filtered solution is shell-frozen and lyophilized in glass vials at −60°C under vacuum for 48 hours.
SP Scientific VirTis Genesis 25EL
Analytical HPLC + LC-MS QC
Every finished batch is verified again on analytical HPLC and confirmed by LC-MS. A second sample goes to an independent third-party lab.
Agilent 1260 Infinity II · Bruker amaZon SL
Cold-pack and ship
Vials are sealed under nitrogen, gel-ice packed, and dispatched via DHL with shipment-level temperature logging.
What "QC passed" actually means
A batch can't ship until it clears all four checks. If any fail, the entire batch is rejected — we don't blend, we don't ship partial.
HPLC purity
Reverse-phase HPLC at 220 nm. Cutoff: 99.0% main peak.
≥ 99.0% requiredMass spectrometry
LC-MS verifies the molecular weight matches theoretical within ±0.5 Da.
m/z match confirmedEndotoxin (LAL)
Limulus amebocyte lysate test for bacterial endotoxin contamination.
< 1 EU/mg requiredIndependent verification
1 vial per batch shipped to a US-based third-party lab. Result published in the COA.
Result on every COAManufacturer-direct, transparent pricing
Most US “peptide brands” are resellers. They buy from facilities like ours, mark up 200%, and sell to you. Here's what changes when you skip the middle layer.
What you gain
- 30–40% lower per-vial pricing
- Direct contact with the synthesis chemist on your batch
- Custom orders & longer peptides on request (5–20 day lead time)
- Bulk pricing for lab purchase orders (10+ vials)
- Batch traceability — every vial linked to a synthesis log
What you trade off
- Shipping is 7–10 days, not 1–2 (Guangzhou → US, DHL)
- Cold-chain depends on DHL Express — we cover failures, but they happen
- US customs occasionally holds shipments for 2–5 extra days
- No phone support during EST business hours (chat is 24/7)
The team
Built by chemists who used to sell to the resellers. Now we sell to you directly.
Dr. Liu Chen
Founder · Head of synthesis
PhD organic chem, Sun Yat-sen Univ. 11 years in peptide synthesis.
Yan Wei
QC lead
Former QC analyst at a Tier-1 CDMO. Owns the COA pipeline.
Mark S.
US ops · customer success
Atlanta-based. Handles customs, returns, and direct researcher contact.
Want to see the lab before you order?
We send a real-time walkthrough video to first-time buyers. Or book a 15-minute Zoom — meet the chemist who'd be running your batch.