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A7300

Sigma-Aldrich

N-Acetylbenzoquinoneimine

Synonym(s):

N-(4-Oxo-1-cyclohexa-2,5-dienylidene)acetamide, N-Acetyl-p-benzo-quinoneimine, NAPQI

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About This Item

Empirical Formula (Hill Notation):
C8H7NO2
CAS Number:
50700-49-7
Molecular Weight:
149.15
MDL number:
MFCD00078909
UNSPSC Code:
12352100
PubChem Substance ID:
57653880
NACRES:
NA.22

form

solid

Quality Level

100

storage temp.

−70°C

SMILES string

CC(=O)\N=C1\C=CC(=O)C=C1

InChI

1S/C8H7NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5H,1H3

InChI key

URNSECGXFRDEDC-UHFFFAOYSA-N

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Application

Reactant involved in:
  • Redox reactions
  • Hydrohalogenation
  • pH dependent reactions: in acidic media it is hydrolyzed, hydroxylated in alkaline media, and dimerized at intermediate pHs
  • Mediation of acetaminophen hepatotoxicity
  • Studies to identify the utility of acetaminophen for treating autoimmune disorders

Other Notes

Acetaminophen metabolite that reacts with serum proteins.

Caution

air, moisture and light sensitive

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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Hui Ting Chng et al.
Journal of biomolecular screening, 17(7), 974-986 (2012-05-31)
The zebrafish model has been increasingly explored as an alternative model for toxicity screening of pharmaceutical drugs. However, little is understood about the bioactivation of drug to reactive metabolite and phase I and II metabolism of chemical in zebrafish as
Cross-linking of protein molecules by the reactive metabolite of acetaminophen, N-acetyl-p-benzoquinone imine, and related quinoid compounds.
A J Streeter et al.
Advances in experimental medicine and biology, 197, 727-737 (1986-01-01)
Angela S Burke et al.
Chemical research in toxicology, 23(7), 1286-1292 (2010-06-29)
Acetaminophen (APAP) toxicity in primary mouse hepatocytes occurs in two phases. The initial phase (0-2 h) occurs with metabolism to N-acetyl-p-benzoquinoneimine which depletes glutathione, and covalently binds to proteins, but little toxicity is observed. Subsequent washing of hepatocytes to remove
Amaresh Kumar Sahoo et al.
Nanoscale, 3(10), 4226-4233 (2011-09-08)
Herein, we report the generation of a composite comprised of p-hydroxyacetanilide dimer and Ag nanoparticles (NPs) by reaction of AgNO(3) and p-hydroxyacetanilide. The formation of the composite was established by UV-vis, FTIR and NMR spectroscopy, transmission electron microscopy and X-ray
Laura P James et al.
Drug metabolism and disposition: the biological fate of chemicals, 37(8), 1779-1784 (2009-05-15)
Acetaminophen (APAP)-induced liver toxicity occurs with formation of APAP-protein adducts. These adducts are formed by hepatic metabolism of APAP to N-acetyl-p-benzoquinone imine, which covalently binds to hepatic proteins as 3-(cystein-S-yl)-APAP adducts. Adducts are released into blood during hepatocyte lysis. We
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