Comparison of sample preparation and determination of 60 veterinary drug residues in flatfish using liquid chromatography-tandem mass spectrometry was written by Kim, Joohye;Park, Hyunjin;Kang, Hui-Seung;Cho, Byung-Hoon;Oh, Jae-Ho. And the article was included in Molecules in 2020.Recommanded Product: (4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-(((2R,3R,4S,5S,6R)-4-(Dimethylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-16-ethyl-4-hydroxy-5,9,13-trimethyl-7-(2-(piperidin-1-yl)ethyl)-15-(piperidin-1-ylmethyl)oxacyclohexadeca-11,13-diene-2,10-dione This article mentions the following:
This study was performed to optimize the anal. method for multi-residues of 60 compounds in flatfish samples. Three sample preparation methods were tested to identify the optimal recovery conditions for target analytes. As a result, 10 mL of water/acetonitrile (1:4, volume/volume) was used to extract analytes from fish samples. For purification, C18 and 10 mL of acetonitrile saturated hexane were used to treat the samples. After evaporation and reconstitution, the fish samples were analyzed by ultra-performance liquid chromatog.-tandem mass spectrometry. The proposed method was validated according to the CODEX guidelines (CAC/GL-71). Our results showed the recoveries of 73.2%-115% and coefficients of variation of 1.6%-22.1%. The limit of quantification was 0.0005-0.005 mg/kg in the fishery products. In anal. of real samples, no samples exceeded the limit of quantification. This anal. method can be used for multi-residue screening and confirmation of the residues of veterinary drugs in fishery products. In the experiment, the researchers used many compounds, for example, (4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-(((2R,3R,4S,5S,6R)-4-(Dimethylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-16-ethyl-4-hydroxy-5,9,13-trimethyl-7-(2-(piperidin-1-yl)ethyl)-15-(piperidin-1-ylmethyl)oxacyclohexadeca-11,13-diene-2,10-dione (cas: 328898-40-4Recommanded Product: (4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-(((2R,3R,4S,5S,6R)-4-(Dimethylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-16-ethyl-4-hydroxy-5,9,13-trimethyl-7-(2-(piperidin-1-yl)ethyl)-15-(piperidin-1-ylmethyl)oxacyclohexadeca-11,13-diene-2,10-dione).
(4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-(((2R,3R,4S,5S,6R)-4-(Dimethylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-16-ethyl-4-hydroxy-5,9,13-trimethyl-7-(2-(piperidin-1-yl)ethyl)-15-(piperidin-1-ylmethyl)oxacyclohexadeca-11,13-diene-2,10-dione (cas: 328898-40-4) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Fluorinated piperidines are also the subject of continued interest in medicinal chemistry, for example in the synthesis of selective dipeptidyl peptidase II (DPP II) inhibitors. Piperidine derivatives are also used in solid-phase peptide synthesis (SPPS) and many degradation reactions.Recommanded Product: (4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-(((2R,3R,4S,5S,6R)-4-(Dimethylamino)-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-16-ethyl-4-hydroxy-5,9,13-trimethyl-7-(2-(piperidin-1-yl)ethyl)-15-(piperidin-1-ylmethyl)oxacyclohexadeca-11,13-diene-2,10-dione
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem