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467936

Sigma-Aldrich

3,4,5-Trichloropyridine

98%

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About This Item

Formule empirique (notation de Hill):
C5H2Cl3N
Numéro CAS:
33216-52-3
Poids moléculaire :
182.44
Numéro MDL:
MFCD00051685
Code UNSPSC :
12352100
ID de substance PubChem :
24870447
Nomenclature NACRES :
NA.22

Pureté

98%

Pf

75-77 °C (dec.) (lit.)

Chaîne SMILES 

Clc1cncc(Cl)c1Cl

InChI

1S/C5H2Cl3N/c6-3-1-9-2-4(7)5(3)8/h1-2H

Clé InChI

KKWRVUBDCJQHBZ-UHFFFAOYSA-N

Description générale

3,4,5-Trichloropyridine is a pyridine derivative. It undergoes oxidation with trifluoroacetic anhydride (TFAA) in the presence of hydrogen peroxide urea complex.

Application

3,4,5-Trichloropyridine may be employed as a secondary standard in quantitative NMR (qNMR) studies.

Pictogrammes

Exclamation mark
GHS07

Mention d'avertissement

Warning

Mentions de danger

H315,H319,H335

Classification des risques

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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A practical, efficient, and rapid method for the oxidation of electron deficient pyridines using trifluoroacetic anhydride and hydrogen peroxide-urea complex.
Caron S, et al.
Tetrahedron Letters, 41(14), 2299-2302 (2000)
Torgny Rundlöf et al.
Journal of pharmaceutical and biomedical analysis, 52(5), 645-651 (2010-03-09)
In quantitative NMR (qNMR) selection of an appropriate internal standard proves to be crucial. In this study, 25 candidate compounds considered to be potent internal standards were investigated with respect to the ability of providing unique signal chemical shifts, purity
Torgny Rundlöf et al.
Journal of pharmaceutical and biomedical analysis, 93, 111-117 (2013-11-12)
Standards are required in quantitative NMR (qNMR) to obtain accurate and precise results. In this study acetanilide was established and used as a primary standard. Six other chemicals were selected as secondary standards: 3,4,5-trichloropyridine, dimethylterephthalate, maleic acid, 3-sulfolene, 1,4-bis(trimethylsilyl)benzene, and
Shi Shen et al.
Journal of pharmaceutical and biomedical analysis, 114, 190-199 (2015-06-13)
This study investigated the accuracy of the quantitative NMR method for purity determination of ACE inhibitors reference standards and the discovery of two pairs of new diastereoisomers. Six types of ACE inhibitors, imidapril hydrochloride, benazepril hydrochloride, lisinopril, enalapril maleate, quinapril
Monika Johansson et al.
Journal of pharmaceutical and biomedical analysis, 100, 215-229 (2014-08-30)
An effective screening procedure to identify and quantify active pharmaceutical substances in suspected illegal medicinal products is described. The analytical platform, consisting of accurate mass determination with liquid chromatography time-of-flight mass spectrometry (LC-QTOF-MS) in combination with nuclear magnetic resonance (NMR)

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