42579
4-Phenyl-1,2,4-triazoline-3,5-dione
derivatization grade (HPLC), LiChropur™, ≥98.0% (CHN)
Synonyme(s) :
Cookson reagent, 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione, PTAD
Se connecter pour consulter les tarifs organisationnels et contractuels.
Sélectionner une taille de conditionnement
Changer de vue
| Conditionnement | Référence | Disponibilité | Prix |
|---|
A propos de cet article
Formule empirique (notation de Hill) :
C8H5N3O2
Numéro CAS:
Poids moléculaire :
175.14
UNSPSC Code:
41116105
NACRES:
NA.22
PubChem Substance ID:
EC Number:
224-191-7
Beilstein/REAXYS Number:
141548
MDL number:
Assay:
≥98.0% (CHN)
Plus de détails sur ce produit 42579 Contacter notre Service technique
Service technique
Besoin d'aide ? Notre équipe de scientifiques expérimentés est là pour vous.
Laissez-nous vous aidergrade
derivatization grade (HPLC)
Quality Level
assay
≥98.0% (CHN)
quality
LiChropur™
technique(s)
HPLC: suitable
mp
165-170 °C (dec.) (lit.)
storage temp.
2-8°C
SMILES string
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
InChI key
ISULLEUFOQSBGY-UHFFFAOYSA-N
General description
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.
Application
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[1] using liquid chromatography–tandem mass spectrometry (LC–MS/MS)technique.
Legal Information
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
Classe de stockage
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Faites votre choix parmi les versions les plus récentes :
Déjà en possession de ce produit ?
Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.
Dienophilic Reagent for Precolumn Derivatization of 7-Dehydrocholesterol in High Performance Liquid Chromatography
Shimada K and OE T
Analytical Sciences, 6(3), 461-463 (1990)
Chromatographic separation of PTAD-derivatized 25-hydroxyvitamin D3 and its C-3 epimer from human serum and murine skin
Teegarden DM, et al.
Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, 991(1), 118-121 (2015)
Grant A Abernethy
Analytical and bioanalytical chemistry, 403(5), 1433-1440 (2012-03-24)
A method for analysing vitamin D(3) (VD3, cholecalciferol) has been established and validated. This method is rapid and cost effective and is intended for use in quality control in the manufacture of fortified infant formulae and milk powders. Milk or
Numéro d'article de commerce international
| Référence | GTIN |
|---|---|
| 42579-10X100MG | 04061833439135 |
| 42579-100MG | 04061832104065 |