Orla V.★★★★★
The stability statement is written against a named storage condition rather than left as a date. That is the difference between something you can hold a supplier to and something you cannot.
Sourcing reference
Sigma-Aldrich (Shanghai) Trading Co., Ltd.
- Base
- Shanghai
- Established
- 2005
4.7
★★★★⯨A rating here summarises what members have said about ordering. It is not a safety rating and it cannot be one.
Sigma-Aldrich (Shanghai) Trading Co., Ltd., trading as SIG, based in Shanghai and giving 2005 as its founding year. 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.
SIG is the supplier members describe by reference to its registered name, which is that of a trading company. Members report that the manufacturing is done by parties it specifies to and does not name, and several have said that the distinction is a scope note rather than a mark against the documentation.
What that documentation is reported to carry: the method line with the gradient, the column chemistry and the detection wavelength; a related-substances table itemised with retention times rather than reported as a single figure; and a stability statement written against a named storage condition rather than a bare shelf life. Members who have compared certificates across more than a year describe the layout as unchanged between orders, which is what makes a lot-to-lot comparison possible without transcribing anything.
On the practicalities: a single vial is treated as an ordinary first purchase, dispatch is quoted at one to two working days from cleared payment, the European lane out of Shanghai is reported at six days door to door against a quoted six to nine, and the shipment temperature record has arrived with the consignment rather than after it. Two members have asked for the underlying chromatogram against lots bought roughly eleven months earlier and had it back inside two working days.
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 eight results this page holds, the independently determined figure has come back at or above the figure printed on the accompanying certificate on every occasion, with the spread running 97.9 to 98.7 per cent. One member submitted a single lot to two services on the same week specifically to test the reproducibility of the method rather than the material; the two reports differed by three tenths of a percentage point, which is inside method variance and is the comparison that means something.
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 sigmaaldrich.org, gives Shanghai as its base and 2005 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 the method line, an itemised related-substances table with retention times and a stability statement against a named storage condition, because members have posted redacted copies
- That two members asked for the underlying chromatogram against lots bought around eleven months earlier and were sent it within two working days
Cannot be checked
- Who actually synthesises any given line, since members report that the company specifies to third parties and does not name them
- Whether the documentary standard members describe extends to lines nobody in this community has ordered
- Anything about the counter-ion content or the water content of a lot you have not asked about, because neither is printed
- Whether a stability statement written against a named condition was arrived at by study or by convention
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 itemised related-substances table.
- What is the water content for this lot, and by which determination method?
- Is the counter-ion identified and quantified for this lot, and if so at what figure?
- If I quote the lot code, can you supply the underlying chromatogram and mass spectrum, including for a lot dispatched some months ago?
Member reports
Published in full, in the words they were written in.
Dmitri O.★★★★★
Sent retatrutide 10 mg to Janoshik without saying where it came from. 98.5 per cent against a printed 98.0. Third time their figure has been the conservative one.
Sunniva A.★★★★★
Related substances are itemised with retention times instead of collapsed into a single total. A single total hides whether one impurity is doing all the work, which is the question I actually have.
Farid L.★★★★☆
No complaint about the material. Counter-ion is not quantified anywhere on the certificate, so I cannot get to a working mass from the fill without assuming. Four for that alone.
Amara S.★★★★★
Asked for the chromatogram behind a lot I bought eleven months earlier, half expecting silence. Two working days. They keep records against material they have already sold.
Kenji B.★★★★★
Three rounds of questions, three same-day answers, and the answers named the purification step rather than describing it in general terms.
Lotte A.★★★★☆
Sequence confirmation is not on the certificate and was not offered when I asked for it. For the contested sequences that is a real gap and I would rather log it than let it pass.
Rasmus P.★★★★★
Split one lot across two services to test the method rather than the vendor. Three tenths apart. That is the assay behaving.
Ingrid B.★★★★★
Water content is not printed but came back the same day on request with the Karl Fischer determination named. Available rather than missing, which is a different complaint.
Noor C.★★★★★
Vial, certificate, invoice and tracking reference all agreed on the lot across four orders. Sounds like nothing until you see how often it is the thing that fails.
Teodor M.★★★★★
They flagged a two-day delay before the quoted date rather than after it, with a revised date that then held. Twice now.
Beatriz H.★★★★★
Eleven certificates over fourteen months and the layout has not changed once. I can compare lots without transcribing anything, which I assume is deliberate.
Yusuf L.★★★★★
Asked them to name the reference standard the purity was determined against and they named it. Hardly anyone will.
Clara O.★★★★★
Shipped from regional stock rather than the facility. Six days to the UK and the temperature record was in the box rather than emailed afterwards.
Aleks F.★★★★★
The catalogue minimum is a single vial, so trialling them cost the price of one unit. That is why I tested them instead of assuming.
Manon T.★★★★★
Cagrilintide 5 mg came back 98.2 against a printed 98.0. Nothing else to report, which is the report.
Silje A.★★★★★
They told me a line was out rather than shipping me something adjacent and hoping I would not notice. That is the answer I want.
Gustav M.★★★★★
Eight results checked against the printed figure over two years and not one of them overstated. Systematically conservative is its own kind of statement.
Leila N.★★★★★
Asked what changed between two lots and got a straight answer about the purification step rather than a deflection.
Hector B.★★★★★
The registered entity is a trading company; it is in the name. I would rather read that off the register than infer it, and it changed how I read the rest of the documentation.
Aditi K.★★★★★
Reconstituted three different lyophilised lines and all three behaved exactly as the certificate guidance said they would.
Matteo N.★★★★★
Shanghai to Rotterdam on day six door to door, with the customs paperwork itemised correctly first time. That lane has been reliable for me since.
Where SIG sells
So you can read their account against this one.
Sigma-Aldrich (Shanghai) Trading 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.