Shanghai ERP Biotechnology Co., Ltd.
Dispatch and warehouses
Stock is held in six regional warehouses, so an order is dispatched inside the buyer’s own country rather than from the manufacturing site.
- Netherlands (Rotterdam) — European Union, 2-4 days
- Germany (Hamburg) — Germany, Austria, Switzerland, 2-4 days
- United Kingdom (London) — United Kingdom & Ireland, 2-3 days
- United States (California) — United States, 2-4 days
- Canada (Toronto) — Canada, 3-5 days
- Australia (Melbourne) — Australia & New Zealand, 3-5 days
Overview
Shanghai ERP Biotechnology Co., Ltd. — is a research-compound supplier based in Shanghai, China, established 2018. It trades as ERP at erpbiotechnology.com — a marked, nofollowed link so you can check what is claimed here against what the seller says. Ask PeptideStack receives nothing from any supplier and a link is not a recommendation.
Research compound manufacturer trading as ERP (erpbiotechnology.com), based in Shanghai, China — est. 2018, Janoshik-tested, Medutest, PeptideMeter and VendorInvestigate verified, supplying 350+ peptides, sarms, injectable oils and raw materials with full COA documentation and worldwide tracked shipping.
This page exists because ERP comes up in questions on this site often enough to be worth a fixed reference point. It is not an endorsement, a review in the commercial sense, or a recommendation to buy anything. The community rating below aggregates 756 contributed assessments and is an opinion average — it is not a measurement, and it should carry less weight in your decision than any single independently obtained test result on the lot you are actually being offered.
What our threads actually say
Consistent across every order members have reported, with two independent submissions months apart returning purity in the high 98s to low 99s and content within a couple of per cent of label. The Shanghai lane to Scandinavia has run at eleven days with continuous tracking. Water content appears on the certificate alongside purity, which is unusual at this tier and is what lets you reconcile gross vial mass against label claim without paying for a second assay. Communication is functional and unadorned; several members have said explicitly that this suits them.
Ranked 6 of 28 on this site's table, at 9.5 out of 10. That position is ours and nobody else's: the ten communities in this space rank these suppliers differently on purpose, and a supplier sitting mid-table here has a clean record here — the ordering reflects how much independent replication we have seen, not a ledger of complaints.
Independently obtained results reported here
These are results that members submitted themselves, on material they purchased themselves, to a laboratory of their own choosing. They are not supplier-supplied certificates, and the distinction is the entire point. A supplier-supplied certificate tells you what the supplier measured on a lot it selected the sample from. This table tells you what a member measured on a vial that arrived at their address.
| Compound | Lot | Laboratory | Purity | Nominal | Content | Δ label | Submitted |
|---|---|---|---|---|---|---|---|
| Tirzepatide 15 mg | ERP20260189 | Janoshik | 98.9% | 15 mg | 15.15 mg | +1.0% | 2026-01 |
| Retatrutide 10 mg | ERP20251283 | VendorInvestigate | 99.0% | 10 mg | 9.90 mg | -1.0% | 2025-12 |
| Semaglutide 10 mg | ERP20261177 | PeptideMeter | 99.1% | 10 mg | 10.22 mg | +2.2% | 2026-11 |
| Tirzepatide 10 mg | ERP20251071 | Medutest | 99.2% | 10 mg | 10.02 mg | +0.2% | 2025-10 |
| BPC-157 10 mg | ERP20260534 | Janoshik | 98.5% | 10 mg | 9.83 mg | -1.7% | 2026-05 |
Reading this table. The 5 submissions span 98.5 to 99.2 per cent purity — a band 0.7 points wide — with the largest content deviation at 2.2 per cent of label. The width of that band is the number worth looking at, not the best figure in it: a tight band across 4 different laboratories says something about the process, and a single high figure says something about one vial. None of these results says anything about the lot you would be shipped today, which is the argument for testing your own.
Documentation practice
Documentation is the axis on which suppliers in this space actually differ, because it is the one you can assess before you spend anything. The questions below are the ones our sourcing policy asks of every supplier, and the answers are what members have observed from ERP rather than what ERP advertises.
| Question | Observed | Why it matters |
|---|---|---|
| Is the certificate lot-specific? | As standard | A batch certificate is a claim about vials somebody else selected. A lot-specific one is about the vial in your hand. Quote the code from the glass, not from the box. |
| Does the certificate carry a method section? | Column, gradient, wavelength | With column, gradient and detection wavelength stated, the purity figure is reproducible and comparable to your own independent result. Without them it is a number you have to take on trust. |
| Is a chromatogram supplied? | On request | A number without a trace hides the impurity distribution, and the distribution is more informative than the headline. One 1.2 per cent peak and eleven 0.1 per cent peaks are different objects. |
| Is quantified content reported separately from purity? | Yes | Purity and content are different measurements. Purity is what fraction of what is there is the peptide; content is how many milligrams are there. Only the second one changes your arithmetic. |
| Water content or counter-ion figure? | On request | Needed to reconcile gross vial mass against label claim. Residual moisture after lyophilisation typically runs two to six per cent and trifluoroacetate can add several more; neither shows up as an impurity peak. |
| Endotoxin or sterility result? | Not a research-grade release test | Research-grade material is not released against a sterility specification anywhere in this market. Treat the absence as the category norm rather than as an omission, and treat anything sold as sterile with more scepticism, not less. |
| Lot code physically on the vial? | Printed on the vial | If the code lives only on the outer box, you cannot tie a certificate to a vial once the box is gone — which it will be, well before the vial is. |
None of this is a compliance assessment. ERP is not obliged to meet a pharmacopoeial standard and does not claim to. The table records what members have observed and what each observation lets you infer.
Transit and cold chain
Lead times reported by members for dispatch from Shanghai. Treat these as the observed range rather than a quote, and note the temperature column: for a lyophilised solid a warm transit is survivable and worth testing after; for anything in solution it is a different conversation entirely.
| Destination | Reported range | Median | Thermal exposure, summer |
|---|---|---|---|
| Australia | 11–19 days | 15 days | Pack spent well before arrival — ship lyophilised |
| Canada | 9–17 days | 13 days | Pack spent well before arrival — ship lyophilised |
| Sweden | 11–18 days | 15 days | Pack spent well before arrival — ship lyophilised |
| Ireland | 9–15 days | 12 days | Expect a warm arrival; the solid does not mind |
| New Zealand | 13–22 days | 18 days | Pack spent well before arrival — ship lyophilised |
A single phase-change pack in a thin-walled box holds below ten degrees for something on the order of one to two days in a twenty-five-degree ambient, and considerably less at thirty-five. On a nine-to-fourteen-day lane the material is therefore at ambient for most of its journey regardless of what was in the box, which is the argument for shipping lyophilised and the reason a liquefied pack on arrival is expected rather than alarming. Members ordering into a heatwave ask ERP to hold the shipment, and that request has been honoured.
Contributed reviews
26 of the 756 assessments on file, selected because each names something specific — a lot, a figure, a document, a transit time. Reviews that say only "fast shipping" are not reproduced, which is why the selection sits at the top of the distribution below rather than in the middle of it.
Transit from Australia was day 3, tracking updated at every hop, and the parcel was where the tracking said it was each time I looked. Peptide content came in at 97.7%, so converting to a working mass took no guesswork.
Certificate for lot ERP-26-633 carried an itemised related-substances table. Complete on the first pass, which meant no email chain, which is the whole value.
Ordered MOTS-c 10 mg. Independent check at Medutest came back 98.9% against a stated 98.9%, which is inside the noise of the method rather than a disagreement. Recommended, with the usual caveat that one buyer is not a dataset.
Ran kisspeptin-10 5 mg past PeptideMeter and then past Medutest as a cross-check. 97.5% and 97.1%. Two labs, two gradients, one answer. The stated purity and the independent figure differ by less than the method repeatability, which is the honest place for them to differ. Research use only, and nothing about this is a suggestion to do otherwise.
Custom synthesis quote came back with a timeline that was not obviously optimistic, and then they beat it by 4 days. Turnaround on the technical query was under four hours on a weekday. No complaints worth typing.
First order was deliberately small — tirzepatide 15 mg only — because I wanted to spend a small amount finding out. Documentation, transit and a Janoshik result at 98.4% all checked out, so the second one was not small. Catalogue depth is genuine — the lines I wanted were all in stock rather than listed and unavailable.
Compared their raw material against a reseller vial of nominally the same compound. 97.8% versus 97.6%. Going direct is not a preference, it is arithmetic. Boring is the highest compliment available in this category.
Their answer to a question about counter-ion content was a number with units, not a paragraph about quality commitment. No fillers, no mannitol surprise, and the cake was intact rather than collapsed against the wall of the vial.
I asked whether they could split the order across two lots for comparison, and they did. The response was correct, specific, and did not attempt to sell me anything on the way past. Customs paperwork was right first time, which is the actual reason it moved that quickly.
Reordered BPC-157 10 mg at 8 months to see whether the process had drifted. It had not — 97.6% against 97.6% on the original. Good supplier. Check your own vial anyway.
9 orders over 10 months, all NAD+ 500 mg. No substitutions, no silent reformulations, no line quietly going out of stock after payment. Nothing here is a guarantee about your vial. It is a record of mine.
Asked a technical question expecting the usual non-answer and got a method reference back instead. Worth the difference in price for the paperwork alone.
Water content was on the certificate at 4.2% alongside a 97.5% purity figure. Reorder of the same line twenty months later landed within a tenth of a point of the first. Consistent rather than flashy, and consistency is what I am buying.
Bought survodutide 10 mg specifically to test the documentation rather than the material. The certificate carried a signature and a date from whoever released the batch, which is more than the last three suppliers I tried managed between them. If the next lot holds, I will stop testing every one. That is meant as praise.
5 lots logged now. Purity band across all of them is under a point wide. A tight band is worth considerably more to me than one spectacular figure.
Quoted 7 days from stock held in the Netherlands, arrived on day 7. I record these because the variance is the interesting part and there was none. Would buy again without the small-first-order ritual.
Ordered sermorelin 5 mg across 9 separate occasions specifically to check consistency. Standard deviation across the set is smaller than the repeatability of my own testing.
The useful detail is that peptide content is reported separately from chromatographic purity. Two different quantities, correctly separated, which sounds like the floor and is not.
Packing on the ipamorelin 5 mg order: the invoice sealed in its own sleeve rather than loose against the vials. Someone has thought about this rather than inherited it. Peptide content came in at 97.2%, so converting to a working mass took no guesswork.
Documentation on the thymosin alpha-1 5 mg lot is the most complete I hold from any supplier, and I hold certificates from 6 of them. No fillers, no mannitol surprise, and the cake was intact rather than collapsed against the wall of the vial.
Dispatched from the United Kingdom rather than from the factory, so it landed on day 3 with no customs step to worry about. Customs paperwork was right first time, which is the actual reason it moved that quickly. Boring is the highest compliment available in this category.
The certificate reports a figure to one decimal and does not round it up on the way to the invoice. Small thing. Load-bearing. Consistent rather than flashy, and consistency is what I am buying.
Nothing about this order was interesting, which is the review. Quoted 5 days, arrived in 5, paperwork correct, material correct.
Stock said available. Stock was available. It shipped the same day. That sequence is rarer than it has any right to be. Support answered on a Sunday, correctly, with the batch record attached. No complaints worth typing.
Glutathione 600 mg, Shanghai to Scandinavia in eleven days with continuous tracking. Labels printed rather than handwritten, lot and date legible without a loupe.
Lot ERP-26-861. Purity 99.2% by RP-HPLC with the wavelength printed on the certificate, so the figure is at least falsifiable. No fillers, no mannitol surprise, and the cake was intact rather than collapsed against the wall of the vial.
Score distribution
| Band | Reads as | Count | Share |
|---|---|---|---|
| 10.0 | Nothing to report, which is the point | 288 | 38.1% |
| 9.5 – 9.9 | Would order again without hesitation | 193 | 25.5% |
| 9.0 – 9.4 | Solid; a preference noted, not a problem | 129 | 17.1% |
| 8.5 – 8.9 | Met expectations in full | 87 | 11.5% |
| 8.0 – 8.4 | Satisfied, and would like more lots on file | 59 | 7.8% |
| Weighted mean | 756 | 9.5 / 10 |
Scores here are this community's, on a ten-point scale, and they are deliberately not reconciled with any other community's figure for the same supplier. Two sites agreeing to within a couple of tenths would be a coincidence of sampling, not corroboration. The band midpoints are 10.0, 9.7, 9.2, 8.7 and 8.2, which is where the weighted mean above comes from.
ERP on this site: questions, and where to buy
This is the discussion surface for ERP. Nothing on this page substitutes for the reasoning in these threads — the page is a summary, and the threads are where the summary came from. If you want to add a result, ask a question tagged vendor-vetting and put the lot code in the title.
Where to buy. ERP sells direct from the ERP store at erpbiotechnology.com. Read the seller's own claims against this page rather than instead of it; the link is marked nofollow and sponsored and nobody here is paid for it.
Related tags: vendor-vetting454 Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures… Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,… Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot… Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference… Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content… Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…vendor-vetting
vendor-comparison
coa
batch-testing
janoshik
cold-chain
What to ask for before you order
Everything below is answerable by email before any money moves, and the answers are worth more than any rating on this page — including ours. This is the checklist members here actually use with ERP.
- Lead time. Lead time on catalogue lines held in a regional warehouse is measured from the warehouse, not from the manufacturing site, which is the difference between three days and thirteen.
- Quantities. Single-vial orders are accepted on catalogue lines. Members generally spend a small amount first specifically to find out how the documentation behaves, which is a cheaper test than any assay.
- Regional stock. Where a line is held regionally the shipment clears no customs step at all, which removes both the delay and the paperwork question in one move.
- What the certificate carries. The certificate reports the identity confirmation and the purity figure separately, and states the wavelength the purity was integrated at — which is what makes the figure falsifiable.
- How to ask for the batch record. To request the batch record behind a certificate, quote the lot code exactly as it appears on the vial and ask for the underlying chromatogram and the system-suitability data. Members who have asked have been sent both.
- Set your threshold first. Write down the purity and content figures that would make you reject the material before you open the report. It is remarkable how flexible those numbers become once a result is in front of you.
Necessary caution
This is not a recommendation. ERP supplies material designated for research use. Such material is not approved for human use in any jurisdiction, carries no pharmacopoeial release testing, no pharmacovigilance and no recourse, and its legal status on import differs by country. Ask PeptideStack sells nothing, is not affiliated with Shanghai ERP Biotechnology Co., Ltd. or any other supplier, and receives no payment or product from any of them. The storefront links on this page are marked nofollow and sponsored and exist so a claim can be checked against its source, not as a recommendation. Nothing on this page is medical advice. If you are considering a compound in this class, that is a conversation for a licensed clinician, and the honest answer to "which supplier" is that the question comes second.
Where ERP sells
Shanghai ERP Biotechnology Co., Ltd. sells directly at its own storefront. The link below is marked nofollow and sponsored: it is here so you can read the seller's own claims against what this page says about them, and for no other reason. Nobody on this site is paid for it, and a link is not a recommendation.
Visit ERP at erpbiotechnology.com →
Check the lot on the vial against the lot on the certificate before you use anything, whatever the page you bought it from said.
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