s.bakker99/100
Multiplicity: four independent services hold records against lot ASY-TR10-5370 and two were retrieved from the issuers rather than from the supplier. Both reconciled to the same lot string.
ASY — Asymchem Laboratories (Tianjin) Co., Ltd.
Tianjin, CN · established 1998. The index holds 190 assay reports across 34 batches and 25 compounds, contributed by 6 laboratories. Every figure below is computed from those records and from nothing else.
Where ASY sells
Asymchem Laboratories (Tianjin) Co., Ltd. sells from its own storefront. The link is marked nofollow and sponsored: it exists so the figures on this scorecard can be read against what the supplier itself publishes. The index is paid nothing for it and a link is not an assessment.
Every figure above describes lots the index has seen. It says nothing about the lot you are offered, and the only check that does is the one on the certificate against the vial.
Block 1
Identification
Business facts, held constant across the index and not derived from the data. The index sells nothing and takes no supplier payment for placement; the storefront link below is marked nofollow and sponsored so a record can be checked against the seller, and is not a recommendation.
- Legal name
- Asymchem Laboratories (Tianjin) Co., Ltd.
- Short code in this index
- ASY
- Also known as
- ASY · Asymchem · Asymchem Laboratories · 凯莱英医药集团
- Domain
- asymchem.org →
- City
- Tianjin
- Region
- Tianjin
- Country
- CN
- Established
- 1998
- First record in index
- 24 Jul 2024
- Most recent record
- 18 Oct 2026
Block 1b
Dispatch and regional stock
Counted from the chain-of-custody line on this supplier's own records, which names the route each vial travelled to the laboratory, and from the on-record reviews below. The index has no sight of any supplier's warehouse network and publishes none.
Domestic-warehouse route
15.8%
n=190
Retail, shipped to the buyer
76.8%
n=190
Direct to the laboratory
0.5%
n=190
Median courier leg, direct despatch
suppressed
n=1
n<3 — see individual records
| Route to the laboratory | Records | Share |
|---|---|---|
| Domestic warehouse despatch | 30 | 15.8% |
| Retail purchase, shipped to the buyer | 109 | 57.4% |
| Retail purchase via a third-party forwarder | 37 | 19.5% |
| Supplier despatch direct to the laboratory | 1 | 0.5% |
| Laboratory retained-sample archive | 13 | 6.8% |
Every record here carries a chain-of-custody line and that line names the route the vial travelled. Of the 190 ASY records the index holds, 30 reached the contributing laboratory from a domestic warehouse rather than as a cross-border consignment, covering 17 of the 25 compounds ASY is represented by here — Retatrutide, BPC-157, Oxytocin, Tirzepatide, GHRP-2, TB-500 and 11 further compounds. Those are the ASY lines this index has actually seen arrive from regional stock, and they are a count of consignments rather than a stock listing: a line missing from them may simply never have been submitted for assay.
No contributor to this index has named a regional stock location for ASY. 30 of its records nevertheless arrived by a domestic-warehouse route, so stock is held somewhere; the index does not know where and will not guess.
The index measures nothing about lead time — it assays material, it does not buy it. What it has is ASY's own reviewers: 2 of the 14 on-record reviews state a quoted window and what happened against it. The reviews are reproduced in full in Block 11.
Block 2
Headline statistics
Each figure carries the n it was computed from. The n= badge next to a statistic is the number of records it was computed from. Below n=8 the badge is amber. Below n=3 the statistic is suppressed and the individual values are shown instead.
Median purity
99.59%
n=190
Interquartile range
0.82pp
n=190
10th percentile
98.46%
n=190
Pass rate vs index spec
99.5%
n=190
Median recovery vs claim
98.7%
n=109
Median water
4.82%
n=190
Median |mass error|
3.0ppm
n=162
Records carrying a flag
15.3%
n=190
Block 3
Reproducibility across independent tests of one lot
Where the same physical lot was assayed more than once, the spread between those results is a property of the material and the fill, not of the market. It is the rarest and most informative statistic on this page, and it exists only for lots someone tested twice.
Median within-batch spread
0.63pp
n=23
Index median spread
0.67pp
n=28
Lots tested 3+ times
23
n=34
Across the 23 ASY lots in the index with three or more independent assays, the median spread between the highest and lowest purity result on one lot is 0.63 pp. Interpreting that number requires the laboratory repeatability figures: the best contributing laboratory here repeats to 0.16 pp and the worst to 0.34 pp, so a within-lot spread under about 0.5 pp is indistinguishable from measurement noise and a spread above 1 pp is a statement about the material.
Block 4
Supplier certificate against independent measurement
The supplier's own COA purity figure for a lot, minus the median of the index's independent observations of the same physical lot. Positive means the certificate reads higher than the measurement. Rule AX-R05 fires above 1.5 pp.
Median COA divergence
+0.00pp
n=34
Index median divergence
+0.06pp
n=28
Divergences in the supplier's favour
50%
n=34
Divergences beyond 1 pp
0%
n=34
Block 5
Provenance — where the tested material came from
Supplier-supplied samples are weaker evidence than independently purchased ones, because the supplier chose the vial. The index measures the size of that effect rather than assuming it.
Buyer-sourced median
99.59%
n=176
Supplier-supplied median
suppressed
n=1
n<3 — see individual records
Supplier-supplied share of records
0.5%
n=190
Too few records in one or both provenance classes (buyer-sourced n=176, supplier-supplied n=1) to compute a provenance gap for ASY. The index-wide effect is +0.31 pp and applies until measured otherwise.
Block 6
Documentation completeness
The score is not an opinion about paperwork. Each component is the share of ASY batches in the index whose certificate carries that field, weighted as set out on the scoring rubric.
Documentation score
96/100
n=34
Index median score
85/100
n=28
| Certificate field | Batches carrying it | Rubric weight | |
|---|---|---|---|
| Purity figure stated | 100% | 25 points | |
| Analytical method stated (column, gradient, wavelength) | 79% | 25 points | |
| Peptide content stated | 76% | 20 points | |
| Endotoxin stated | 26% | 15 points | |
| Named impurities rather than a total | 80% | 15 points |
Block 7
Coverage by compound
The delta column is this supplier's median minus the index-wide median for the same compound, which is the only comparison worth making: comparing a supplier's aggregate against another supplier's aggregate compares their product mixes as much as their process control.
| Compound | Class | Reports | Median % | Index median % | Δ (pp) | Index spec | Pass % |
|---|---|---|---|---|---|---|---|
| Retatrutide | Incretin | 26 | 98.36 | 98.37 | -0.02 | 96.5 | 100 |
| Tirzepatide | Incretin | 17 | 98.78 | 98.55 | +0.23 | 97.0 | 100 |
| Oxytocin | Hypothalamic | 13 | 99.93 | 99.81 | +0.12 | 98.5 | 100 |
| Exenatide | Incretin | 12 | 99.33 | 98.98 | +0.35 | 98.0 | 100 |
| BPC-157 | Tissue-repair | 12 | 99.69 | 99.16 | +0.53 | 98.0 | 100 |
| Pramlintide | Incretin | 11 | 98.95 | 99.10 | -0.15 | 97.5 | 100 |
| Hexarelin | Growth-hormone | 11 | 99.82 | 99.59 | +0.23 | 99.0 | 100 |
| Kisspeptin-10 | Melanocortin-receptor | 11 | 99.66 | 99.28 | +0.38 | 98.5 | 100 |
| TB-500 | Tissue-repair | 9 | 99.93 | 99.53 | +0.40 | 98.5 | 100 |
| Enclomiphene citrate | Non-peptide | 9 | 99.88 | 99.44 | +0.44 | 98.5 | 100 |
| PT-141 (Bremelanotide) | Melanocortin-receptor | 9 | 99.57 | 99.38 | +0.19 | 98.5 | 100 |
| Liraglutide | Incretin | 8 | 99.90 | 99.00 | +0.91 | 97.5 | 100 |
| Vilon | Short | 8 | 99.93 | 99.65 | +0.28 | 99.0 | 100 |
| Thymosin α1 | Tissue-repair | 7 n=7 | 99.37 | 99.40 | -0.03 | 97.5 | 100 |
| GHRP-2 | Growth-hormone | 6 n=6 | 99.80 | 99.28 | +0.52 | 99.0 | 100 |
| N-Acetyl Semax Amide | Neuroactive | 5 n=5 | 99.88 | 99.35 | +0.53 | 98.5 | 100 |
| SS-31 (Elamipretide) | Metabolic | 4 n=4 | 99.87 | 99.53 | +0.34 | 98.5 | 100 |
| Selank | Neuroactive | 3 n=3 | 99.83 | 99.59 | +0.24 | 99.0 | 100 |
| PEG-MGF | Growth-hormone | 2 n=2 | n<3 | 97.75 | — | 92.0 | 100 |
| Humanin (HNG) | Metabolic | 2 n=2 | n<3 | 99.12 | — | 97.5 | 100 |
| ARA-290 | Tissue-repair | 1 n=1 | n<3 | 99.42 | — | 98.0 | 100 |
| MOTS-c | Metabolic | 1 n=1 | n<3 | 99.13 | — | 98.0 | 100 |
| GHRP-6 | Growth-hormone | 1 n=1 | n<3 | 99.54 | — | 99.0 | 0 |
| KPV | Tissue-repair | 1 n=1 | n<3 | 99.64 | — | 99.0 | 100 |
| Triptorelin | Hypothalamic | 1 n=1 | n<3 | 99.41 | — | 98.5 | 100 |
Full per-compound breakdown with distributions and caveats →
Block 8
Quarterly trend
Submission volume is not market share and a quarterly median is not a trend unless the compound mix held still. Both caveats apply to every row below.
Median purity by quarter
Quarters with fewer than two purity records are gaps in the line rather than zeroes.
Coverage growth
Records added per quarter. Growth here is index coverage, not supplier volume.
| Quarter | Batches | Reports | Median purity | Range | Flagged |
|---|---|---|---|---|---|
| 2024-Q1 | 0 | 0 | n<3 | — | 0 |
| 2024-Q2 | 0 | 0 | n<3 | — | 0 |
| 2024-Q3 | 1 | 9 | 99.57 | 99.09–99.85 | 0 |
| 2024-Q4 | 2 | 12 | 99.72 | 99.10–99.93 | 0 |
| 2025-Q1 | 4 | 28 | 99.47 | 98.26–99.93 | 4 |
| 2025-Q2 | 4 | 14 | 99.38 | 98.44–99.93 | 2 |
| 2025-Q3 | 5 | 27 | 99.31 | 97.85–99.93 | 3 |
| 2025-Q4 | 7 | 49 | 99.83 | 98.52–99.93 | 12 |
| 2026-Q1 | 1 | 1 | n<3 | — | 0 |
| 2026-Q2 | 7 | 29 | 99.38 | 97.57–99.93 | 4 |
| 2026-Q3 | 3 | 21 | 99.66 | 97.92–99.93 | 4 |
Block 9
Which laboratory produced these numbers
Laboratories disagree with each other by a measured amount. A supplier tested mostly by one laboratory carries that laboratory's offset in its aggregate, and the adjusted column removes it.
| Laboratory | Reports | Median purity | Lab bias (pp) | Bias-adjusted |
|---|---|---|---|---|
| Janoshik | 80 | 99.59 | +0.00 | 99.59 |
| PeptideMeter | 27 | 99.32 | -0.05 | 99.37 |
| Medutest | 28 | 99.88 | +0.08 | 99.80 |
| VendorInvestigate | 23 | 99.23 | -0.11 | 99.34 |
| Nordanalyt | 20 | 99.68 | +0.02 | 99.66 |
| Kestrel | 12 | 99.82 | +0.24 | 99.58 |
Bias figures are estimated from paired same-lot comparisons and are published with their confidence intervals on inter-lab agreement.
Block 10
What this data does and does not show
Block 11
On-the-record reviews 14
Reviews are signed statements from index contributors about their own testing of this supplier's material. They are opinions attached to evidence, and they are not used in any statistic on this page.
96.0/ 100766 ratings across the index network
a.balogun99/100
Documentation: column, gradient and integration threshold as issued; related substances itemised by retention time; Karl Fischer water; counter-ion content with unit. Nothing supplied on request.
c.stanescu99/100
Submitted figure 99.1 against a declared 98.0 on BPC-157. Six lots on file and the declared figure has not once been the higher of the two.
a.mensah95/100
Process observation, not an assay one. Dispatch warehouse differed from the lot on the most recent published certificate. Supplier identified the dispatching lot on request, before payment.
d.sorensen99/100
Endotoxin by LAL present on the certificate as issued for the lyophilised lines. Rare in this registry without a specific request.
fa.sjoberg98/100
Consistency: same line ordered six months apart, submitted figures 0.1 points apart, certificate layout unchanged.
j.lindqvist99/100
Batch record supplied against a quoted lot code inside one working day and named the purification step rather than summarising it.
no.ibarra93/100
Custom sequence quotation returned in four working days against same-day catalogue acknowledgement. Work met its stated dates once quoted.
ro.okwuosa99/100
Two services on one lot, four tenths of a point apart, which is method repeatability rather than disagreement.
ay.ivaturi99/100
Ten units, ten matching lot strings across vial, certificate and invoice.
an.petrov95/100
One unit of ten presented a soft cake; reconstitution clear. Recorded as an observation.
s.marchetti99/100
Certificate retrieved for an order eleven months old without a reason being required.
a.correia98/100
Transit Tianjin to UK seven days, continuous scanning, customs accepted at first presentation.
ne.kuusela99/100
IGF-1 LR3 submitted at 99.8 against a declared 98.0; second service on the same lot agreed within two tenths.
Block 12
Most recent records
Block 13
Contributor annotations on ASY records 368
Annotations are this index's only discussion surface: signed technical comments attached to a specific record by a named contributor. They are not moderated for agreement with the index's own arithmetic. The most recent on ASY material are below, each linked to the record it sits on.
Column chemistry flatters or punishes a figure like this. A core-shell column at this gradient resolves the close-eluting family that a fully porous 5 µm bed merges, so 99.92 % here is a harder number than the same figure from a coarser column.
99.92 % is normalised area, so it is silent on how much peptide is in the vial. Content and water are the numbers that answer that, and both are on this record. Purity is the good news; content is the actionable news.
The packaging as received is part of the evidence on a retail purchase. Whether a desiccant was in the box is a fact about ordinary shipments, not about sample shipments.
Ordering under an unremarkable name and address is the whole method. It requires no cooperation from anybody and it produces the strongest evidence this index holds.
At 214 nm the amide bond dominates the response, so a peptide impurity is seen roughly in proportion to its size. 99.78 % on this detection is the conservative reading; a 280 nm trace would flatter it.
Where a supplier-supplied result on the same lot also exists, the pair is the informative object rather than either record alone. The batch page shows whether one does.
An orthogonal identity method on the same lot would make this the strongest class of record the index holds. Mass plus retention is already better than most.
Strong provenance does not fix small n. One well-sourced record is still one record, and the batch page says how many others exist for ASY-{CAT}-2167.
Every annotation the index holds on ASY material sits on its own record; the full set is reachable from the record listing and from each contributor's page. To read them against what ASY itself publishes, open asymchem.org → alongside.
Block 14
Where to buy ASY
Asymchem Laboratories (Tianjin) Co., Ltd. sells direct from asymchem.org. Everything on this page describes lots the index has already seen; the certificate that matters is the one that arrives with the vial you order, and the lot code on it should match the vial. Ask for the lot-specific document rather than the batch-level summary, and ask for the integration report if you intend to reconcile the figure yourself.
Go to the ASY store at asymchem.org →
Marked nofollow and sponsored. The index is paid nothing for it, takes no commission, and a link is not an assessment. Research compounds. Not medical advice. Nothing on this site is a safety assessment and nothing on it is approved for human use.