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It’s funny I was over at SST not that long ago and asking for sources was kind of frowned upon there too. Maybe go do a new member intro and get to know some people here. The rest typically works itself out.Based on what we’ve found out on here which sources are the most reliable in terms of sterility and getting what you pay for in terms of compounds
we apparently have this laying around on the forum but it haven't been brought up yet.Thirdly, I still think that the chance of this kind of oxidation happening is minimal. It is much more common for oxidation to have occured twice during the synthesis. It is very common when trying to add/alter one functional group, to alter a second similar group.
Thanks for the comments.Correct, I agree, but we can't be (yet) 100% sure whether the changes are not induced by the heat from the GCMS causing loss of hydrogen.
The HPLC used for anabolic steroids is actually UHPLC (Shimadzu as well!).
Generally, in the industry you don't differentiate the two, UHPLC (and UPLC) are subset of HPLC, but generally, it does *not* play a role in the quality of the separation.
The main differences are in solvent consumption, speed, easiness to link it to LCMS etc.
If you had enough data points for raws you could get a calibration curve between GCMS API% (via TIC) and HPLC purity just like we found for oils (my hunch). A relative response factor (RRF) if you will. Worked just fine in the oils as shown in your thread.I got a few batches of raws incoming that i plan to get tested, however I'm on the fence between GCMS and hplc.
Take for e.g, this BU GCMS thread shows that GCMS is not a good way to get purity.
- Sampei
- Replies: 22
- Forum: Analytical Lab Testing
However based off the most recent testing, it also shows that anything similar but not the same (degradation, poor manufacturing) is probably incorrectly captured by HPLC and will only show up on GCMS.
As of now, I'm leaning towards GCMS because it does show if a product is "safer" to inject but this leaves me guessing what % to use for brewing
Obviously i could do both..but that doubles my testing cost..
And to clarify, this only works if you go to the trouble of using reference standard on compound of interest and confirm it is properly resolved from API with the HPLC method (for example, the c6-c7 ene compound that has been discussed as nauseum). It isn't made by heat in the GC.If you had enough data points for raws you could get a calibration curve between GCMS API% (via TIC) and HPLC purity just like we found for oils (my hunch). A relative response factor (RRF) if you will. Worked just fine in the oils as shown in your thread.
The relative volatilities and ionization are pretty similar for all these components.
Until we have enough data then both tests give you important info.
thinksteroids.com
its 9-1Does the alt banned within 2 hours count or is it a shutout? 9-0.
Ok, so you count the banned alt. Lol.its 9-1
Voting still open @dinfar1337 ?
Does the alt banned within 2 hours count or is it a shutout? 9-0.
Members who reacted to message #1456
thinksteroids.com
Voting still open @dinfar1337 ?
Does the alt banned within 2 hours count or is it a shutout? 9-0.
Members who reacted to message #1456
thinksteroids.com
I mean... it's kinda funny but whatever.Gloating? How old are you
I mean... it's kinda funny but whatever.
Ill never understand people "coming at each other" like bitches on the Internet... especially with the "ignore" feature...but again, I always have the naive belief that most of us would either like each other in real life (or walk completely down the other side of the road and never cross paths again...).
So is the issue mostly that Primal needs to upgrade his bottle top filter when brewing? If so, should be easy enough fix,.or not?MESO-Rx Sponsor Post in thread 'Primal Pharma - US Domestic'
Plastic is now confirmed.
I will create a separate thread on this so as to not crowd this thread with unwanted testing discussions.
No testing reimbursement fee required.
Vials from 2 different batches.
The first batch and the current batch.
As confirmed by Primal, only 2 batches exist.
