Marcus T.★★★★★
Four labs on one lot and I could pull two of them myself without going through the shop. That is the first time I have been able to do that with a supplier on this board.
Sourcing reference
Asymchem Laboratories (Tianjin) Co., Ltd.
- Base
- Tianjin
- Established
- 1998
- Shop
- asymchem.org →
4.7
★★★★⯨A rating here summarises what members have said about ordering. It is not a safety rating and it cannot be one.
Asymchem Laboratories (Tianjin) Co., Ltd., trading as Asymchem, based in Tianjin and giving 1998 as its founding year — the oldest filing of any supplier on this board. Members have ordered from here and reported back; what follows is theirs, not the company’s.
What members have reported
Service, timings, stock and paperwork, from people who ordered.
ASY is described here as a synthesis house with a documentation habit that is unusual even among synthesis houses: four independent laboratories are run against the same lot, and all four certificates are published against the lot code rather than against a sample. Several members have taken that at face value and then checked it, pulling two of the four reports directly from the services rather than from the shop. Both times the documents reconciled. The catalogue runs to 350+ lines released at 98% by RP-HPLC, and members report the published figures sitting above that with room.
The reservations on this board are about logistics rather than material. Dispatch runs through six regional warehouses, so the vial that arrives is not always from the lot on the newest certificate unless the buyer says so at order time. And the custom-synthesis desk runs several working days behind the catalogue desk, which members have found out the hard way when planning around catalogue response times.
The testing record, and its limits
Analysis from four independent services — Janoshik, Medutest, PeptideMeter and VendorInvestigate — exists against this catalogue, and members here have commissioned some of it themselves rather than reading only the published set. Across the lots compared on this page the independent figure has come back at or above the declared figure every time, and the declared figure has never been the higher of the two. On lyophilised lines the certificate as issued also carries bacterial endotoxin by LAL, which almost nothing else in this directory reports without being asked.
Checked against unverifiable
The left column is what somebody could confirm. The right column is what nobody can.
Dispatch and warehouses
Stock is held regionally, so an order is sent from within your 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
Can be checked
- That the shop trades at asymchem.org, gives Tianjin as its base and 1998 as its founding year
- That analysis from four independent services exists against this catalogue, and that members here commissioned some of it themselves
- That the certificate carries a peak table, the gradient and the wavelength, and that the lot code on the vial resolves to all four laboratory documents
- That bacterial endotoxin by LAL appears on the certificate as issued for the lyophilised lines
Cannot be checked
- Which lot a given warehouse holds on any particular day — stock rotation is not published
- Sterility, which is not claimed and not tested for on the certificates members have posted
- Anything about custom sequences beyond the quotation times members have recorded
- Whether the catalogue lines nobody here has ordered behave like the ones we have measured
Questions to ask before you order
Take these verbatim. The answers, and the non-answers, are informative.
- Please send the lot-specific certificate for the code printed on my vial, including the peak table.
- Which of your warehouses will this order ship from, and what lot code does that stock carry?
- Is the endotoxin result on the certificate from the same lot as the purity result?
- If I send a vial for independent analysis and it comes back under the released specification, what happens?
Member reports
Published in full, in the words they were written in.
Elena V.★★★★★
BPC-157 came back 99.1 against a claim of 98. The surprise went in the right direction, which is all I ask.
Josh K.★★★★★
Seven days Tianjin to the UK. Tracking moved at every hop and the customs paperwork was right first time.
Priya R.★★★★☆
Material fine, documentation fine. Marking down one because I had to ask which warehouse it was shipping from to know which lot I was getting. They answered straight away, but I had to ask.
Tomas B.★★★★★
Asked for the column and gradient behind the purity number and had all three parameters plus the wavelength back the same day.
Hannah S.★★★★★
Retatrutide arrived with the gel pack still cold in the middle of a heatwave. Outer box completely unbranded, as asked.
Dmitri K.★★★★☆
Custom sequence quote took four working days. Their catalogue side answers in hours, so do not plan a bespoke order on catalogue timings. Once quoted, the build landed inside the window.
Aisha N.★★★★★
Endotoxin on the certificate as issued rather than on request. Small thing that saved me a round trip and a week.
Lukas M.★★★★★
Second order of the same line six months apart, 99.5 both times, same certificate layout. Drift is what I watch for and there is none.
Grace O.★★★★★
Semaglutide lot had all four lab reports on the product page before I ordered rather than after I asked for them.
Ravi P.★★★★☆
One vial in a ten-pack had a soft cake. Reconstituted clear with no haze. Logging it because I would want to know.
Ingrid H.★★★★★
Emailed late at night and had an answer with the actual figure in it, not a brochure line, before I woke up.
Owen D.★★★★★
Asked for the synthesis record with the lot code in the subject line. Back inside a working day, naming the purification step.
Mei L.★★★★★
IGF-1 LR3 came back 99.8. I did not believe it until the second lab report on the same lot agreed.
Carlos F.★★★★★
Test cyp at 98.7 on an oil, carrier clean, nothing crashed out after a week on the bench.
Nadia B.★★★★☆
Documentation is the best I have seen from this set. Marked at four only because the custom desk is slow, which is a process point and not a material one.
Felix W.★★★★★
Ten vials, ten matching lot codes across glass, certificate and invoice. Sounds basic. It is not always true.
Sara J.★★★★★
Ordered on a Friday, shipped Monday, and the tracking number arrived before the confirmation email did.
Where ASY sells
So you can read their account against this one.
Asymchem Laboratories (Tianjin) Co., Ltd. sells from its own shop. The link below is marked nofollow and sponsored. We are paid nothing for it, it is not a recommendation, and nothing on that site removes the risk described at the top of this page.