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429074

Sigma-Aldrich

2-tert-Butyl-1,4-benzoquinone

98%

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About This Item

Linear Formula:
(CH3)3CC6H3(=O)2
CAS Number:
Molecular Weight:
164.20
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

form

solid

mp

54-58 °C (lit.)

SMILES string

CC(C)(C)C1=CC(=O)C=CC1=O

InChI

1S/C10H12O2/c1-10(2,3)8-6-7(11)4-5-9(8)12/h4-6H,1-3H3

InChI key

NCCTVAJNFXYWTM-UHFFFAOYSA-N

General description

2-tert-Butyl-1,4-benzoquinone (TBQ, TBBQ, tBQ, BuBQ, BQ , tert-butyl-p-quinone) is a 1,4-benzoquinone derivative. It is a major metabolite of the food additive, butylated hydroxyanisole (BHA). TBQ is reported to be strongly cytotoxic in human monocytic leukemia U937 cells. TBQ is an oxidation product of 2-tert-butylhydroquinone (TBHQ). Studies confirm that TBQ induces apoptosis and cell proliferation inhibition in chronic myelogenous leukemia (CML) cells. Its binding interactions with lysozyme has been examined and found to be intermediate between BHA and TBHQ. It has been reported to be synthesized by the titanium superoxide catalyzed oxidation of 2-tert-butylphenol using aq. 30% H2O2. TBQ is one of the main neoformed compounds from TBHQ decomposition in PLA-TBHQ film (Poly lactic acid).

Application

2-tert-Butyl-1,4-benzoquinone may be used in the synthesis of azatrioxa[8]circulene.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

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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Titanium superoxide catalyzed selective oxidation of phenols to p-quinones with aq. H2O2.
Dewkar GK, et al.
Indian J. Chem. B, 44(7), 1530-1530 (2005)
Binding properties and structure-affinity relationships of food antioxidant butylated hydroxyanisole and its metabolites with lysozyme.
Wu D, et al.
Food Chemistry, 188, 370-376 (2015)
Azatrioxa [8] circulenes: Planar Anti-Aromatic Cyclooctatetraenes.
Nielsen CB, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 19(12), 3898-3904 (2013)
P A Schilderman et al.
Carcinogenesis, 16(3), 507-512 (1995-03-01)
The food additive butylated hydroxyanisole (BHA) has been shown to induce gastrointestinal hyperplasia in rodents by an unknown mechanism. The relevance of this observation for human risk assessment is not clear. We therefore analysed the effect of BHA and its
Release of synthetic phenolic antioxidants from extruded poly lactic acid (PLA) film.
Jamshidian M, et al.
Food Control, 28(2), 445-455 (2012)

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