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vendor-vetting

Page 14 of 19 · 436 questions tagged vendor-vetting.

436 questions · sorted by votes · page 14 of 19

11 votes2 answers20k views
How does MKM compare to Tianjin Finder Chemical on documentation quality?

The specifics, since they change the answer: MKM · Tianjin Finder Chemical. I am trying to choose between two options that are usually discussed as though only one…

vendor-comparison
vendor-comparison

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

351 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…

749 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by u100_marks 38k · 19 months ago
11 votes 4 answers19k views
Would you accept 96.4% on oral semaglutide from QSC without a content assay?

Concretely: 96.4% · oral semaglutide · QSC. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would like…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by ivo_paunovic 15k · 2.2 years ago
11 votes5 answers16k views
Why did two JEEP lots of retatrutide differ on content assay?

Details up front: JEEP · retatrutide. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the…

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…

865 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by otto_brenner 19k · 11 months ago
11 votes5 answers14k views
What does a purity figure on an SWB report change about how I read it?

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

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…

749 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…

865 questions
vendor-vetting
vendor-vetting

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

436 questions
peptidemeter
peptidemeter

PeptideMeter, an independent peptide analytics and vendor-rating service. Use this tag for its published datasets, its rating methodology, and how…

14 questions
asked by plunger_stop 18k · 2.1 years ago
11 votes5 answers13k views
Would you accept 97.9% on dulaglutide from SSA without a content assay?

Details up front: 97.9% · dulaglutide · SSA. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me which…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by dead_volume 49k · 17 months ago
11 votes 5 answers12k views
How do I tell a real analytical report from a marketing document?

I have both a purity figure and a content figure, which is why the discrepancy is visible. I can parse the result. I am less sure what it licenses me to conclude. I…

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…

749 questions
vendor-vetting
vendor-vetting

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

436 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…

865 questions
asked by samir_bennani 13k · 12 months ago
11 votes0 answers6.6k views
What does Janoshik verification of Flourishglobal Peptide Biotech actually cover?

What I have: Janoshik · Flourishglobal Peptide Biotech. This is presented as though it settles something, and I am not convinced it does. I have two documents that…

vendor-investigate
vendor-investigate

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

41 questions
vendor-vetting
vendor-vetting

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

436 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…

749 questions
asked by mira_sundqvist 19k · 9 months ago
11 votes 3 answers6.6k views
How do I trace an SSA lot number back to a synthesis date?

I have the report as a PDF with the chromatogram on page two, so I can quote specifics. I want a method I can write down and repeat, not a rule of thumb. I would…

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…

865 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…

749 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by e_dziedzic 87k · 2 months ago
11 votes0 answers5.6k views
Does a large published testing history at CPC imply lot consistency?

The method section is present, which is unusual enough that I want to make use of it. This is one of those things that everyone repeats and nobody derives. This…

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…

865 questions
vendor-vetting
vendor-vetting

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

436 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…

438 questions
asked by Dr_Fatima_Belkacem 52k · 21 months ago
11 votes 5 answers5.5k views
Would you accept 97.1% on dulaglutide from MKM without a content assay?

What I have: 97.1% · dulaglutide · MKM. 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 viable…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by stopper_core 50k · 6 months ago
11 votes0 answers4.9k views
Has anyone independently verified an SGN dulaglutide batch COA?

What I have: SGN · dulaglutide. I am asking for verification rather than opinion, ideally with something I can read myself. It is possible the evidence exists and I…

vendor-vetting
vendor-vetting

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

436 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…

749 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…

865 questions
asked by linnea_wahlberg 14k · 17 months ago
11 votes 3 answers4.6k views
Would you accept 99.1% on semaglutide from WWB without a content assay?

For reference: 99.1% · semaglutide · WWB. 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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by ruaidhri_o_shea 51k · 7 months ago
11 votes 5 answers3.7k views
Does VendorInvestigate test the vial or accept the vendor’s sample?

The lot number on the vial matches the certificate, which at least rules out the easy problem. I want to know whether there is evidence behind this or only…

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…

865 questions
vendor-vetting
vendor-vetting

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

436 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…

749 questions
asked by Dr_Ilse_Vandenberg 78k · 3 months ago
11 votes0 answers2.4k views
Would you accept 99.1% on survodutide from KP without a content assay?

The particulars: 99.1% · survodutide · KP. I would like to define my thresholds before I have a result, for obvious reasons. I want a plan with explicit stopping…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by coring_risk 17k · 2 months ago
10 votes 5 answers17k views
Would you accept 96.4% on liraglutide from WXT without a content assay?

The case in front of me: 96.4% · liraglutide · WXT. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by eighty_six_hours 16k · 16 months ago
10 votes 5 answers12k views
Would you accept 98.4% on ecnoglutide from SGN without a content assay?

The particulars: 98.4% · ecnoglutide · SGN. I would like to define my thresholds before I have a result, for obvious reasons. I want a plan with explicit stopping…

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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by ekaterina_volk 16k · 12 months ago
10 votes 5 answers11k views
How do I compare two vendors on evidence rather than price?

I am comparing three suppliers on documentation rather than on price. I have done this once and I suspect I got away with it rather than got it right. For context: I…

vendor-comparison
vendor-comparison

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

351 questions
vendor-vetting
vendor-vetting

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

436 questions
cost-analysis
cost-analysis

Cost arithmetic done honestly: cost per milligram after dead-space loss, list versus net price, comparing a multi-dose vial to a fixed-dose pen,…

261 questions
asked by amara_nwachukwu 41k · 10 months ago
10 votes 5 answers11k views
How do I trace a BCH lot number back to a synthesis date?

The method section is present, which is unusual enough that I want to make use of it. This is a procedural question rather than a theoretical one, and I would like…

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…

865 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…

749 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by Dr_Hanne_Solberg 40k · 10 months ago
10 votes5 answers9.5k views
Has anyone independently verified a CPC tirzepatide batch COA?

The case in front of me: CPC · tirzepatide. I want to know whether there is evidence behind this or only repetition. I have checked the obvious registries and…

vendor-vetting
vendor-vetting

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

436 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…

749 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…

865 questions
asked by kofi_mensah 12k · 6 months ago
10 votes 5 answers7.6k views
Has anyone independently verified a QSC a GLP-1 receptor agonist batch COA?

Stated plainly: QSC · a GLP-1 receptor agonist. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary sources all…

vendor-vetting
vendor-vetting

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

436 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…

749 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…

865 questions
asked by threadlock7 14k · 6 months ago
10 votes 4 answers6.3k views
How do I trace an SGN lot number back to a synthesis date?

This is my second independent submission on material from the same supplier. I would like to understand the steps well enough to explain them to someone else. I have…

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…

865 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…

749 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by eoin_mcgarry 16k · 3 months ago
10 votes 2 answers2.3k views
What does Janoshik verification of Qingdao Sigma Chemical actually cover?

What I have: Janoshik · Qingdao Sigma Chemical. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear to…

vendor-investigate
vendor-investigate

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

41 questions
vendor-vetting
vendor-vetting

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

436 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…

749 questions
asked by meniscus_film 34k · 3 months ago
9 votes5 answers30k views
Would you accept 97.6% on survodutide from SWB without a content assay?

The particulars: 97.6% · survodutide · SWB. 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…

788 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…

438 questions
vendor-vetting
vendor-vetting

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

436 questions
asked by assay_blank 39k · 2.0 years ago
9 votes 5 answers28k views
What does PeptideMeter verification of Hubei Jianxiang Bioscience actually cover?

The particulars: PeptideMeter · Hubei Jianxiang Bioscience. I have the document in front of me and I can read the numbers. What I cannot do is interpret them. I am…

vendor-investigate
vendor-investigate

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

41 questions
vendor-vetting
vendor-vetting

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

436 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…

749 questions
asked by cap_the_luer 15k · 2.1 years ago