SinoPep
SinoPep Biotechnology (Changzhou) Co., Ltd.
Changzhou, Jiangsu · China · est. 2011 · source page added 11 Mar 2025
Buy direct from SinoPep at sinopep.net →
Their storefront, not ours. Marked nofollow and sponsored, and nobody here is paid for it.
Changzhou, established 2011, running its own Fmoc solid-phase lines rather than buying finished powder and relabelling it. The certificates read accordingly: method line with column and gradient, itemised related substances, water content and appearance printed as issued. The unusual part is the counter-ion figure - trifluoroacetate reported with units without being asked, which moves the arithmetic on a 10 mg vial more than most buyers allow for. Five independent tests logged here across three services and the claimed number has never been the higher one. The board's standing note against it is the custom-synthesis desk, which runs a few days behind the catalogue side.
- Legal name
- SinoPep Biotechnology (Changzhou) Co., Ltd.
- Short code
- SinoPep
- Also known as
- SNP, SinoPep, SinoPep Bio
- Shop domain
- sinopep.net →
- City
- Changzhou, Jiangsu
- Established
- 2011
- Community rating
- 92%
- Independent tests logged
- 6
Regional stock, so orders ship inside the buyer’s own country.
- 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
- Five independent tests across three services and the stated figure has never come back the optimistic one
- Counter-ion (TFA) content printed on the certificate unprompted, alongside water content and appearance
- Records retrieval is genuinely good - members have pulled certificates for orders over a year old without being asked why
- Custom synthesis is quoted individually and members have logged three working days for a quote on a non-catalogue sequence; the catalogue desk answers within hours, so do not plan one on the other's timings
- Inland origin - ask which of your lines is held in forward regional stock rather than dispatched from Changzhou, because the two lanes differ by several days
- Vial print is small; several members photograph the box on arrival rather than trust the label to stay legible through a freezer cycle
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-06-30 | Janoshik | Tirzepatide 10mg | SNP-TR10-8305 | 98.6% | 98.9% |
| 2026-05-08 | Medutest | Tesamorelin 10mg | SNP-TS10-4127 | 98.2% | 98.4% |
| 2026-04-18 | Janoshik | Retatrutide 10mg | SNP-RT10-9042 | 98.5% | 98.8% |
| 2026-03-21 | PeptideMeter | BPC-157 10mg | SNP-BC10-2318 | 98.8% | 99.1% |
| 2026-01-15 | Janoshik | Semaglutide 10mg | SNP-SM10-6690 | 98.4% | 98.7% |
| 2025-11-26 | Medutest | GHK-Cu 50mg | SNP-GH50-1173 | 99.0% | 99.2% |
| From | To | Carrier | Days |
|---|---|---|---|
| Changzhou | UK | DHL | 7-10 |
| Changzhou | EU | EMS | 9-14 |
- 1[Lab] split one vial across PeptideMeter and VendorInvestigate — 99.0% and 99.1%c/vendorvetting · 16k points · 64 comments
- 2[Vendor] WXT vs JEEP on the same compound, same month — both cleared 97.0%c/coa · 15k points · 38 comments
- 3[Vendor] GL Biochem vs GGPeps on the same compound, same month — both cleared 97.5%c/coa · 14k points · 51 comments
- 4purity is the most under-discussed thing on this boardc/coa · 13k points · 66 comments
- 5why does nobody talk about water contentc/coa · 13k points · 63 comments
- 6[Meta] the area percent rule is doing its job and people should stop complainingc/coa · 11k points · 58 comments
- 7unpopular opinion: most of what gets said here about PeptideMeter is guessworkc/vendorvetting · 11k points · 27 comments
- 8[Lab] FGP BPC — PeptideMeter came back 99.6% against a claimed 99.0%c/coa · 11k points · 28 comments
- 9vendor is the most under-discussed thing on this boardc/vendorvetting · 11k points · 65 comments
- 10how much of what we believe about batch actually comes from purity threadsc/coa · 10k points · 52 comments
certificate for lot SNP-TR10-8305 had the column, the gradient and the wavelength on it. that is a synthesis house's document, not a repackager's.
retatrutide 10 mg went to janoshik blind. 98.8% against a stated 98.5%. their number was the conservative one, which is the direction i want it wrong in.
asked for the TFA content before ordering and had it back the same afternoon with units. 3.6%. almost nobody volunteers that and it changes the maths on a 10 mg vial.
changzhou to ireland in eight days, scanned at every hop. no dead intervals. that is the only bit of a transit estimate i actually care about.
five lots of bpc-157 logged since last summer and the purity band across all five is under a point wide. i will take the tight band over one spectacular number.
pulled a certificate for an order from fourteen months ago. found and sent, nobody asked why i wanted it. sounds trivial until you have watched a bigger name fail it.
semaglutide 10 mg assayed at 10.05 mg against a 10 mg label. one lot, one number, offered as exactly that.
reordered tesamorelin at eleven months specifically to see if the process had drifted. same method line, same wavelength, within a tenth of a point. that is the test that matters.
they quoted a sequence two other places declined. quote carried a purity target and a timeline and both held.
water content and appearance both printed as issued rather than supplied on request. small thing. it is also the thing that tells you which kind of supplier this is.
no complaint on the material. the custom desk took three working days to come back with a number while the catalogue side answers the same afternoon. plan around it.
vial print is small enough that i photographed the box on arrival. six months in a freezer and i was glad i had.
ghk-cu 50 mg, weighed eleven vials against label, all inside two per cent. fill consistency is harder than purity and gets discussed a tenth as often.
third order, third time the paperwork matched the glass. quoted seven days, arrived in seven. nothing interesting happened, which is the review.
asked which resin a line was built on and got an answer rather than a referral to sales. that only happens when the company actually makes the material.
tirzepatide 10 mg, blind submission, 98.9% against 98.6% stated. i send without saying where it came from and i post whatever comes back.
the related-substances table is itemised rather than rolled into one number. it is the difference between a document and a marketing sheet.
eleven days to spain via EMS, which is at the slow end of what they quoted but it never stopped moving. i would rather slow and tracked than fast and dark.
second certificate against a lot bought the previous year, retrieved and sent without escalation. that is a records system, not a favour.
not affiliated, not sponsored. bought twice, tested once, both fine. posting because the file here was thin when i was deciding.
the counter-ion line is the reason i keep coming back. everything else on this board is comparable; almost nobody else prints TFA unasked.
asked for the chromatogram behind a summary figure and was sent the chromatogram. i expected a summary of the summary.
changzhou dispatch is inland so i asked what was held forward regionally before ordering. worth doing - the two lanes are days apart.
bought expecting to have something to complain about after the custom-desk threads. the catalogue order was faultless. mildly annoying.
SinoPep Biotechnology (Changzhou) Co., Ltd. sells from its own storefront. Read what they say about themselves against the log above, then decide.
Go to the SinoPep store — sinopep.net →
Check the lot on the vial against the lot on the certificate when it arrives. A good record predicts your batch; it cannot guarantee it, and no storefront can.