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[Photon]

That’s not right. You see the 20% on the ethyl ester above. And the ethyl oleate is only like 1%.

It's a qualitative GCMS, not quantitative.
Some other oil is being used, we just don't know the composition.

Post in thread 'GCMS and HPLC -- any relationship?'

Sep 1, 2025

Did i read it wrong?
29.22 Benzyl Benzoate
23.99 (E)-9-Octadecenoic acid ethyl ester

(E)-9-Octadecenoic acid ethyl ester

webbook.nist.gov

Area % in GCMS does not equal mass or volume % in the sample.

(E)-9-Octadecenoic acid ethyl ester

webbook.nist.gov

Ethyl Oleate

webbook.nist.gov

Two different compounds.

Cheers

• janoshik

• 

 

[Sera]

It's a qualitative GCMS, not quantitative.
Some other oil is being used, we just don't know the composition.

Post in thread 'GCMS and HPLC -- any relationship?'

Sep 1, 2025

Did i read it wrong?
29.22 Benzyl Benzoate
23.99 (E)-9-Octadecenoic acid ethyl ester

(E)-9-Octadecenoic acid ethyl ester

webbook.nist.gov

Area % in GCMS does not equal mass or volume % in the sample.

(E)-9-Octadecenoic acid ethyl ester

webbook.nist.gov

Ethyl Oleate

webbook.nist.gov

Two different compounds.

Cheers

• janoshik

• 

if it’s not quantitative to some degree then what about @readalot ’s correlation graph thing between concentration of steroids hplc and gcms?

 

[sionnach]

Isn’t that just ethyl oleate?..

Nope, it's the ethyl ester of stearic acid, made when fats (most of which contain stearic acid) come in contact with ethanol. Ethyl oleate is oleic acid coming in contact with ethanol.

 

[Sera]

Nope, it's the ethyl ester of stearic acid, made when fats (most of which contain stearic acid) come in contact with ethanol. Ethyl oleate is oleic acid coming in contact with ethanol.

Yeah but the auto id can be wrong

“Ethyl stearate has a melting point of approximately 33–35°C”
That’s the same as test e nearly.

 

[Photon]

Yeah but the auto id can be wrong

Yes it can.
But given that Jano mentioned upfront it is not EO, i don't believe it to be EO.

 

[sionnach]

Yeah but the auto id can be wrong

I guess. Doesn't matter anyway, China gonna China.

 

[Photon]

I guess. Doesn't matter anyway, China gonna China.

Q's oils have only MCT, per GCMS, so it's kinda clear they're using a different factory. In fact their oils looks exactly like domestic UGL's lol. Best source for US Dom resellers.

 

[readalot]

if it’s not quantitative to some degree then what about @readalot ’s correlation graph thing between concentration of steroids hplc and gcms?

We made it fully quantitative here at MESO. Used to be semi-quantitative. Haha.

Just needed to do the analysis and build model with HPLC + GCMS companion data.

 

[CHIEF M]

The best is the first time you get a gusher in your quad. Seeing the blood squirt out and wonder is this how it ends. They will find me croaked on the floor with some questionable liquid in a syringe.

Yup had one of those too and was last time I ever pinned quads

 

[Sera]

Yes it can.
But given that Jano mentioned upfront it is not EO, i don't believe it to be EO.

So a solid waxy substance

 

[Photon]

View attachment 344908
So a solid waxy substance

GPT gave me this..

 

[Sera]

We made it fully quantitative here at MESO. Used to be semi-quantitative. Haha.

Just needed to do the analysis and build model with HPLC + GCMS companion data.

It wasn’t that far off though was it?

 

[CHIEF M]

I got lightheaded as shit after my first pin. Felt like I had the spins for a minute or two lmao I thought I was gonna have to abandon the cycle altogether

 

[readalot]

It wasn’t that far off though was it?

Will publish all the equations. Wasn't too bad to your point.

 

[sionnach]

View attachment 344908
So a solid waxy substance

Elaidic acid is the isomer of oleic acid, not stearic.

 

[Sera]

Elaidic acid is the cis isomer of oleic acid, not stearic.

Yeah I just put the exact chemical name into pubchem. I don’t think it’s stearic.

 

[Sera]

Will publish all the equations. Wasn't too bad to your point.

my point is if it’s anywhere near 20% of this identified substance then it wouldn’t be a super thin oil like we see in our china oils. Of course maybe it’s an outlier and it’s actually like 1% showing near 20% . But most other components seem to show somewhat near what they actually are.

 

[Photon]

Yeah I just put the exact chemical name into pubchem. I don’t think it’s stearic.

(E)-9-Octadecenoic acid ethyl ester

webbook.nist.gov

Other names:9-Octadecenoic acid, ethyl ester, (E)-;Ethyl 9-octadecenoate, (E)-;Ethyl (9E)-9-octadecenoate;Elaidic acid, ethyl ester;Ethyl elaidate;trans-9-Octadecenoic acid, ethyl ester

 

[Photon]

my point is if it’s anywhere near 20% then it wouldn’t be a super thin oil like we see in our china oils. Of course maybe it’s an outlier and it’s actually like 1% showing near 20% . But most other components seem to show somewhat near what they actually are.

I agree with you, given how thick those oils are..

 

[sionnach]

Yeah I just put the exact chemical name into pubchem. I don’t think it’s stearic.

It's not the cis. I had oleic and elaidic backwards. My brain doesn't see in 3d mirrors very well on holidays. Regardless, it's all shit that shouldn't be in our oils.