Your only pic is a washing machine!!!!!!!!!! No pics of sterilization AT ALL !!!!!'nnnnm
-Myth-
-Myth-
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Thanks bb69 your a salty vet like me so I will just go private just to avoid myth crying like a girl who just won the physique final. Plus bb69 you always keep it real....shamrock...I've seen u for a few yrs around the boards, correct? You're gonna get yourself in trouble with all this. Why are you posting all your biz out in the wide open? This entire thread is beyond ridiculous.
I like you, partner, but I'm advising you to cease and desist this shit. In other words, knock it off.
Okay, so for all you nay sayers and cocksuckers that gave me a hard time look at this PDF this is how all mass specs should be done better than any I have seen done yet period. I'm disappointed with the results at 25% but what can you do, Ohhhhh who wants to signup now?....
Here are the results explained!
See the attached Powerpoint slides. First I ran the LC-MS in reverse phase mode with positive detection. Mobile phase was water to acetonitrile (ACN) with 0.1% FA. Slide 2 shows that the peaks which elute during the gradient (30 min) are mainly associated with three peak clusters with maxima at 289, 433 and 865. From your information the peak at 289 is consistent with protonated testosterone. The other two are unknown compounds. They are not derived from the LC system, ACN or the mobile phase (see slide 3). Thus I extracted the chromatogram for each of the peaks at the said maxima and shown at the bottom (Slide 2) is the spectrum at ~ 19 min, consistent with testosterone and its Na adduct (m/z = 311). Slide 1 shows the same results for another sample preparated at 1in100 dilution in ACN. Basically the same testosterone peak is shown at 19 min. The more hydrophobic peaks for 433 and 866 are shown as spectra in the middle panel (Slide 1). The m/z= 866 might be a dimer of the m/z= 433 peak. Slide 3 shows a blank (ACN) injection. Slides 4 and 5 show the LC-MS/MS of the 1/100 sample tracking the fragmentation of the 289, 433 and 866 peaks. The 289 peak produces fragments with are consistent with the testosterone rings A and D (97 and 109) at 19 min. At 26.5 min the chromatographic peak (Slide 5) indicates that the 433 precursor is related to testosterone since it produces similar fragments plus a bit of the 289.4 precursor, presumably due to the loss of a side chain with mass of 144. The bottom MS/MS spectrum, also at 26.5 min (Slide 5) confirms that 866 is a dimer of 433. The Q1 spectra of the sample (not shown) shows that the charges of all the three peaks are +1. Based on the Q1(+) spectrum of the entire chromatogram (slide 2) and the fact that the intensities of 289 : 433 : 866 are in the ratio 1:2:1, it would appear that the ratios of the three compounds is 25%:50%:25% respectively. Thu testosterone is ~ 25% of the sample.
If I understand right this is nothing more than several members getting together to brew. Why would he need photos?Your only pic is a washing machine!!!!!!!!!! No pics of sterilization AT ALL !!!!!'nnnnm
-Myth-
The labs response :
I am going to take a little bit of time to answer you and your Doctor Friend.
1. Your email is impossible to understand as it is written in poor English.
2. Your resident doctor might be a good physician but he is not an expert in Mass Spectrometry
3. The work that I performed for you did not state that I was going to do quantitation by HPLC with UV visible detection, only by LC-MS (by the way, LC is HPLC). It was not stated in my quotation for service either.
4. The acetonitrile run is required in order to ensure the observed peaks in the sample are NOT originating from impurities in the system or in the solvent. It is a standard practice. I quite can’t figure out the nature of your complaint, I did not charge for the acetonitrile run, only for your sample.
5. You are not familiar with the fragmentation process (MS/MS). This is done to confirm the identity of the compound. Seeing a peak on the LC-MS chromatogram which corresponds to the expected peak is NOT enough to assign the peak to the expected compound.
6. I do not have a laboratory performing tests for me. All the experiments are done in house
7. Since no standard UV work was requested, none was performed, so not calibration curve is necessary
8. I never reported a concentration, only a rough idea on what the purity might be. Also I clearly stated in my previous email from 089-27-14 that I would need an authentic standard in order to perform quantitation on the sample: “The purity is based only on the mass spec measurement. This is because the compound is difficult to measure and I don’t have an external standard to correlate the area for the TS peaks. For that an externals standard would be required.”
9. There is an LC in front of the MS. This is why the experiment I performed is and LC-MS. You and your resident doctor friend do not know what you are talking about.