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vendor-vetting

Page 12 of 19 · 454 questions tagged vendor-vetting.

454 questions · sorted by votes · page 12 of 19

15 votes 5 answers13k views
How do I check that two WXT lots of cagrilintide agree on content assay?

What I have: WXT · cagrilintide. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have photographed the current…

batch-testing
batch-testing

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…

910 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by gradient_slope 46k · 9 months ago
15 votes 5 answers13k views
Would you accept 99.4% on cagrilintide from HJ without a content assay?

What I am working with: 99.4% · cagrilintide · HJ. I am trying to build something sustainable rather than something thorough that I will abandon. I have already…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by nine_point_nine 60k · 18 months ago
15 votes 4 answers9.6k views
How does GL Biochem compare to Hubei Jianxiang Bioscience on documentation quality?

Details up front: GL Biochem · Hubei Jianxiang Bioscience. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by jana_horakova 10k · 3 months ago
15 votes 5 answers9.6k views
How do I check that two QYB lots of survodutide agree on content assay?

The particulars: QYB · survodutide. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I understood…

batch-testing
batch-testing

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…

910 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
survodutide
survodutide

A GLP-1 and glucagon receptor dual agonist with a substantial published MASH dataset. Use this tag for its hepatic endpoints, its dose ladder, and…

225 questions
asked by rhian_prydderch 23k · 14 months ago
15 votes 5 answers7.9k views
How does TFC compare to Zhuhai Kerui Biotechnology on documentation quality?

Stated plainly: TFC · Zhuhai Kerui Biotechnology. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to know that,…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by area_percent 9.9k · 6 months ago
15 votes 5 answers7.7k views
Does QSC issue lot-specific documentation, or a batch certificate?

The lot number on the vial matches the certificate, which at least rules out the easy problem. I would like help reading this properly rather than being told what…

batch-testing
batch-testing

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…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by void_volume 9.5k · 14 months ago
15 votes 5 answers7.1k views
Has anyone independently verified a Homopeptide liraglutide batch COA?

The specifics, since they change the answer: Homopeptide · liraglutide. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
liraglutide
liraglutide

A once-daily GLP-1 receptor agonist and the compound that established the class. Still relevant for its shorter half-life, its paediatric and…

235 questions
asked by fill_volume 22k · 3 months ago
15 votes5 answers4.8k views
What does Janoshik verification of Bachem Holding (Suzhou) actually cover?

The specifics, since they change the answer: Janoshik · Bachem Holding (Suzhou). I can parse the result. I am less sure what it licenses me to conclude. I have…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by hana_petrikova 10k · 3 months ago
15 votes 5 answers4.4k views
Would you accept 95.2% on semaglutide from SGN without a content assay?

The particulars: 95.2% · semaglutide · SGN. I am at the decision point and I would rather think it through than improvise. I would rather spend money on measurement…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

470 questions
asked by pk_curve 30k · 5 months ago
15 votes5 answers2.9k views
Has anyone independently verified a BCH mazdutide batch COA?

What I am working with: BCH · mazdutide. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary sources all citing each…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
mazdutide
mazdutide

A GLP-1 and glucagon receptor dual agonist developed primarily in China, with a distinct dose range and a fast-moving publication record.…

237 questions
asked by rune_thoresen 16k · 34 days ago
14 votes0 answers21k views
Would you accept 97.9% on retatrutide from GGPeps without a content assay?

Details up front: 97.9% · retatrutide · GGPeps. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
retatrutide
retatrutide

An investigational GLP-1, GIP and glucagon receptor tri-agonist, studied in the TRIUMPH programme. Not approved anywhere. Use this tag for…

251 questions
asked by bridget_nyathi 12k · 2.4 years ago
14 votes5 answers21k views
How do I check that two CPC lots of oral semaglutide agree on content assay?

The case in front of me: CPC · oral semaglutide. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…

batch-testing
batch-testing

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…

910 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
oral-glp1
oral-glp1

Oral routes for GLP-1 receptor agonism: peptide formulations rescued by absorption enhancers such as SNAC, and true small molecules that need no…

219 questions
asked by per_haugen 13k · 15 months ago
14 votes5 answers21k views
Has anyone independently verified a WWB dulaglutide batch COA?

The specifics, since they change the answer: WWB · dulaglutide. I would rather be corrected now than propagate something wrong. I am specifically not interested in a…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
dulaglutide
dulaglutide

A once-weekly GLP-1 receptor agonist built on an Fc fusion rather than fatty-acid acylation. Use this tag for questions about the fusion-protein…

200 questions
asked by bounty_hunter_q 15k · 21 months ago
14 votes5 answers18k views
What would you ask Qingdao Sigma Chemical before a first order that they cannot fake?

I am comparing three suppliers on documentation rather than on price. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
asked by oona_kekkonen 13k · 11 months ago
14 votes 5 answers16k views
What does a date of analysis on an HJ report change about how I read it?

The specifics, since they change the answer: date of analysis · HJ. I want to understand what this actually establishes, as opposed to what it is being used to imply.…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by second_lot 9.4k · 19 months ago
14 votes 5 answers14k views
How do I trace a Homopeptide lot number back to a synthesis date?

The lot number on the vial matches the certificate, which at least rules out the easy problem. I have done this once and I suspect I got away with it rather than got…

batch-testing
batch-testing

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…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by anouk_desmet 16k · 7 months ago
14 votes 2 answers12k views
Does a large published testing history at ERP imply lot consistency?

The method section is present, which is unusual enough that I want to make use of it. The empirical answer seems settled. The explanation does not. If the honest…

batch-testing
batch-testing

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…

910 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
asked by rosa_mendieta 8k · 8 months ago
14 votes 5 answers11k views
What does a date of analysis on a Homopeptide report change about how I read it?

The specifics, since they change the answer: date of analysis · Homopeptide. I want to understand what this actually establishes, as opposed to what it is being used…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by coring_risk 27k · 22 months ago
14 votes 5 answers7.2k views
What does a purity figure on an SGN report change about how I read it?

Conditions: purity figure · SGN. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the method…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by ravi_pillai 12k · 10 months ago
14 votes 5 answers6.8k views
What does VendorInvestigate verification of Sangon Biotech (Shanghai) actually cover?

The case in front of me: VendorInvestigate · Sangon Biotech (Shanghai). The figures are clear enough; the question is what they mean and what they do not. I can…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
asked by mira_sundqvist 7.1k · 4 months ago
14 votes 4 answers4.1k views
How does QSC compare to Shanghai Sigma-Audley on documentation quality?

Concretely: QSC · Shanghai Sigma-Audley. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can obtain either option…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by helena_vidmar 8.5k · 3 months ago
13 votes5 answers36k views
Has anyone independently verified an ERP mazdutide batch COA?

What I am working with: ERP · mazdutide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have searched the…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

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…

910 questions
mazdutide
mazdutide

A GLP-1 and glucagon receptor dual agonist developed primarily in China, with a distinct dose range and a fast-moving publication record.…

237 questions
asked by ines_brandt 113k · 2.4 years ago
13 votes 5 answers29k views
How does HJ compare to Shanghai Wibson Biotechnology on documentation quality?

Details up front: HJ · Shanghai Wibson Biotechnology. I would like the axes of comparison first and the recommendation second. I have tried the first option and it…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by greta_holzmann 23k · 22 months ago
13 votes 5 answers24k views
How does FGP compare to ChinaPeptides (QYAOBIO) on documentation quality?

The specifics, since they change the answer: FGP · ChinaPeptides (QYAOBIO). Both of these get recommended confidently by different people, which suggests neither is…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
asked by pip_okonjo 13k · 2.2 years ago