Janoshik Analytical laboratory testing services

[Sampei]

Got timed out. Continuing with results Janoshik shared today (post #1216)...

TE reference standard:
HPLC purity: 98%+
GCMS purity: 95.5%*
*No difference in volatility or ionization among the two detected compounds.

"Random" TE Client Sample:
HPLC purity: 98%+
GCMS purity: 96.2%*,**
*No difference in volatility or ionization among the two detected compounds.
**Pretty incredible no other compounds detected in this sample. It is as clean as the reference standard. Not a trace of raw material or free hormone. I don't understand this at all.

what you don't understand? that raw manufacturer can create pure product if they want and they care?

 

[readalot]

what you don't understand? that raw manufacturer can create pure product if they want and they care?

That a "random" sample used for this particular work would test as clean as the euro pharmacopeia ref standard. As I said, not a hint of anything besides side product. No free hormone. No precursor. Nothing. Look at the GCMS raw data.

IMO: All the data we have thus far indicates HPLC overestimates purity of Test ester raws with -ene impurities due to the inability of the HPLC method to resolve the respective peaks.

See posts #219 and 220. Combined with data shared above by Jano today (minimal side product formation in GC), the picture seems very clear to me.

Would be simple to demonstrate with testosterone impurity (-ene) reference standard mixed with test ester ref standard at various ratios. Then shoot onto HPLC.

 

[janoshik]

We'we had exactly two test e raw samples in last week and the other was 30% purity, so I figured it wouldn't be quite representative.

And I didn't feel like scouring the archives.

Will run the CRM through HPLC tomorrow if we have the time.