42579
4-Phenyl-1,2,4-triazoline-3,5-dione
for HPLC derivatization, LiChropur™, ≥98.0% (CHN)
Synonim(y):
Cookson reagent, 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione, PTAD
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About This Item
Wzór empiryczny (zapis Hilla):
C8H5N3O2
Numer CAS:
Masa cząsteczkowa:
175.14
Beilstein:
141548
Numer WE:
Numer MDL:
Kod UNSPSC:
41116105
Identyfikator substancji w PubChem:
NACRES:
NA.22
Polecane produkty
klasa czystości
for HPLC derivatization
Poziom jakości
Próba
≥98.0% (CHN)
jakość
LiChropur™
metody
HPLC: suitable
mp
165-170 °C (dec.) (lit.)
temp. przechowywania
2-8°C
ciąg SMILES
O=C1N=NC(=O)N1c2ccccc2
InChI
1S/C8H5N3O2/c12-7-9-10-8(13)11(7)6-4-2-1-3-5-6/h1-5H
Klucz InChI
ISULLEUFOQSBGY-UHFFFAOYSA-N
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Opis ogólny
4-Phenyl-1,2,4-triazoline-3,5-dione, also known as Cookson reagent, is a strong dienophile, which gives a stable Diels-Alder adduct quantitatively within a short time and under mild conditions. It is commonly used as a protecting group of the diene moiety for the synthesis of vitamin D3 (VD3)-related compounds.
Zastosowanie
4-Phenyl-1,2,4-triazoline-3,5-dione may be used as a derivatizing reagent for the determination of trace levels of 25-hydroxyvitamin D and its C-3 epimer in biological samples and cholecalciferol (vitamin D3) in fortified infant formula, milk and milk powder using liquid chromatography–tandem mass spectrometry (LC–MS/MS)technique.
Informacje prawne
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
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Kod klasy składowania
11 - Combustible Solids
Klasa zagrożenia wodnego (WGK)
WGK 3
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
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The structural specificity of vitamin D derivatization by PTAD (4-phenyl-1,2,4-triazoline-3,5-dione) was probed using synthetic analogues and ion trap mass spectrometry. EB 1089, a vitamin D(3) analogue which contains a second site for Diels--Alder cycloaddition on its side-chain, allowed the examination
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Simultaneous and accurate measurement of vitamin D and 25-hydroxyvitamin D in biological samples is a barrier limiting our ability to define "optimal" vitamin D status. Thus, our goal was to optimize conditions and evaluate an LC-MS method for simultaneous detection
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