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158631

Sigma-Aldrich

4′-Chloroacetanilide

97%

Synonym(s):

N-(4-Chlorophenyl)acetamide, Acetic acid 4-chloroanilide, NSC 40563, NSC 444

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About This Item

Linear Formula:
CH3CONHC6H4Cl
CAS Number:
539-03-7
Molecular Weight:
169.61
Beilstein:
509638
EC Number:
208-707-8
MDL number:
MFCD00000612
UNSPSC Code:
12352100
PubChem Substance ID:
24849769
NACRES:
NA.22

Quality Level

100

Assay

97%

form

solid

mp

176-178 °C (lit.)

SMILES string

CC(=O)Nc1ccc(Cl)cc1

InChI

1S/C8H8ClNO/c1-6(11)10-8-4-2-7(9)3-5-8/h2-5H,1H3,(H,10,11)

InChI key

GGUOCFNAWIODMF-UHFFFAOYSA-N

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General description

4′-Chloroacetanilide is the main impurity present in acetaminophen and has been quantitated by new high-performance liquid chromatography method using a mixed-mode reversed-phase/cation exchange stationary phase.

Application

<ul>
<li><strong>High-performance liquid chromatography (HPLC) method validation:</strong> 4 chloroacetanilide is used as an internal standard for isosorbide dinitrate in the assay of sustained-release tablets or capsules containing nitroglycerin, isosorbide dinitrate, or pentaerythritol tetranitrate by high-performance liquid chromatography (Gelber and Papas, 1983).</li>
</ul>

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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4-Aminophenol United States Pharmacopeia (USP) Reference Standard

USP

1021204

4-Aminophenol

Benzamide 99%

Sigma-Aldrich

135828

Benzamide

Tamas A Godany et al.
Chimia, 65(4), 253-255 (2011-06-18)
Lithiation of N-(4-chlorophenyl)-pivalamide (NCP) and two additional substituted acetanilides: 4-fluoroacetanilide (4-F) and 4-chloroacetanilide (4-Cl) has been monitored by means of calorimetry, on-line ATR-IR and UV/vis spectroscopy and endoscopy. The combined on-line monitoring revealed the differences between the reaction paths of
L Koymans et al.
Xenobiotica; the fate of foreign compounds in biological systems, 23(6), 633-648 (1993-06-01)
1. The general mechanism of metabolic oxidation of substrates by cytochromes P450 (P450s) appears to consist of sequential one-electron oxidation steps rather than of a single concerted transfer of activated oxygen species from P450 to substrates. 2. In case of
Octavian Călinescu et al.
Journal of chromatographic science, 50(4), 335-342 (2012-03-13)
Determination of acetaminophen and its main impurities: 4-nitrophenol, 4'-chloroacetanilide, as well as 4-aminophenol and its degradation products, p-benzoquinone and hydroquinone has been developed and validated by a new high-performance liquid chromatography method. Chromatographic separation has been obtained on a Hypersil
Jody A Shoemaker et al.
Journal of AOAC International, 89(1), 201-209 (2006-03-04)
U.S. Environmental Protection Agency (EPA) Method 535 has been developed in order to provide a method for the analysis of "Alachlor ESA and other acetanilide degradation products," which are listed on EPA's 1998 Drinking Water Contaminant Candidate List. Method 535
Anthony F Pizon et al.
Clinical toxicology (Philadelphia, Pa.), 47(2), 132-136 (2008-07-09)
p-Chloroaniline is more potent at producing methemoglobin than aniline in animal models. This case highlights the clinical presentation of an inhalation exposure to p-chloroaniline and associated laboratory analysis. An in-vitro study evaluating the metabolism of p-chloroaniline in human hepatocytes was
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