Eloralintide
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"For routine verification of research supplies"
Yes, if, for example, you are the manufacturer, and you run the line of Eloralintide, and you set it up already, used MS/MS or NMR initially to verify the output is a proper Eloralintide, then for "routine verification" is it enough to just run basic LC-MS/HPLC from time to time to make sure nothing changes. It's very unlikely that the product all of the sudden becomes something else, but this test result remains the same.
But if you buy an unknown compound from a market, you have no idea what it is, and basic tests become not sufficient.
@vpeps Really? So explain why Freedom, Vanguard and a Janoshik all evaluated Eloralintide for users on here without the special testing? Hmmm…. Inquiring minds want to know your reasoning. Oh, and Jano only did it for Nexaph because it was specifically requested. They did two other analyses confirming Elora without the bridge testing.
I’m thinking we’re going to have to agree to disagree? -
@vpeps Really? So explain why Freedom, Vanguard and a Janoshik all evaluated Eloralintide for users on here without the special testing? Hmmm…. Inquiring minds want to know your reasoning. Oh, and Jano only did it for Nexaph because it was specifically requested. They did two other analyses confirming Elora without the bridge testing.
I’m thinking we’re going to have to agree to disagree?@mikebricker I guess they just did what they were paid for. If a customer requests a simple MS or a simple HPLC for identity, what should you as a lab produce? You measure m/z or the retention time, compare to the reference and say it matches or not. Is it a "required" for identity test? - yes. It is a "sufficient" - no. Any test result is a statistical measure, a probability, with some error margin, false positives, false negatives, etc. You want to be more certain? Do more tests. It is never 100% guarantee, but at some point it becomes "highly likely".
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Janoshik said that, of approximately 30 eloralintide bridge NMR orders, only one customer had understood the purpose of the analysis. He also expressed the view that regular HPLC testing was sufficient, saying bridge defects would affect retention or molar mass, while referring to some unlikely exceptions.
https://krysia0430.substack.com/p/paying-for-peptide-testing-is-a-yes -
Janoshik said that, of approximately 30 eloralintide bridge NMR orders, only one customer had understood the purpose of the analysis. He also expressed the view that regular HPLC testing was sufficient, saying bridge defects would affect retention or molar mass, while referring to some unlikely exceptions.
https://krysia0430.substack.com/p/paying-for-peptide-testing-is-a-yes@mmp Exactly. Thank you.
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@duckamerica Yeah, that head Janoshik guy don’t know crap either….
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@Stevepep I hear you. However, I asked Krause that same question and they wouldn’t do that. They are ordering the standards so they can test Eloralintide and Cartalax. Even though they could just “punch in” the mass and call it good. My point is this voodoo about some exotic bridge is just BS. If they have the standards the MS confirms the peptide….
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@duckamerica Yeah, that head Janoshik guy don’t know crap either….
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I just ordered one 10mg vial from GLOW Aminos and with all the discounts about same price as 1/10 box from Nexaph. If I like it I’ll probably swap out the Tirz from my Reta/Tirz stack…. A quad agonist….
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@mikebricker In this case, it's Nexaph: they seem to always go above and beyond in setting the standards. Its why some people dropped $700 to try it (Ya me). You know you are getting 10 vials of what you ordered.
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@MikeMiranda I've got an order in with him. He's got good prices on a few things and the 30ml genetek bac water
@ManicXmedic
What have you order? What coa lab did he has for those?
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@ManicXmedic
What have you order? What coa lab did he has for those?
.@mmp i did not ask for a coa. Dumb, I know but my risk tolerance is more than my intelligence most of the time (something I'm working on). I got a ghk-cu 50, and a pt-141 with a convi-pen which was on sale for $30 and some vial covers. Included was a free genetek ampule with the order. I'm sure if you want to reach out you could get coa's, I think they were going to be away for the weekend though. Oh you know, I remember that the labels had qr code probably for coa. I'll check and post back* ok looks like freedom coa for the ghk-cu 58mg (Changsha) and Jano coa for the pt-141 @ 11.6mg (PGB)
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@mikebricker I would be interested to know if Krause has capability for NMR testing of the bridge. If not, that would make me very suspicious of their answer.
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@mikebricker I would be interested to know if Krause has capability for NMR testing of the bridge. If not, that would make me very suspicious of their answer.
@JtCjEfF I would love to see Krause be on a level with Vanguard but when you charge $89 how the heck could you afford to buy all the necessary reference samples for $300,000 a year like Vanguard claims. There is a reason they are 3x the price imo. Their relationship with Finnrick is a massive turnoff as well. Janoshik just appears to be on on another level.
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@mikebricker I would be interested to know if Krause has capability for NMR testing of the bridge. If not, that would make me very suspicious of their answer.
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@JtCjEfF I would love to see Krause be on a level with Vanguard but when you charge $89 how the heck could you afford to buy all the necessary reference samples for $300,000 a year like Vanguard claims. There is a reason they are 3x the price imo. Their relationship with Finnrick is a massive turnoff as well. Janoshik just appears to be on on another level.
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@mikebricker krause is notorious for fill numbers that vary wildly. You can usually expect them to come in under everyone else but its not consistent.
Send them the same batch 3 weeks apart. different result.
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@mikebricker krause is notorious for fill numbers that vary wildly. You can usually expect them to come in under everyone else but its not consistent.
Send them the same batch 3 weeks apart. different result.
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