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Sigma-Aldrich

1-Chloro-2,4-dinitrobenzene

≥99%

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Synonym(s):
2,4-Dinitrochlorobenzene, CDNB, DNCB
Linear Formula:
ClC6H3(NO2)2
CAS Number:
Molecular Weight:
202.55
Beilstein:
613161
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

≥99%

form

solid

expl. lim.

22 %

bp

315 °C (lit.)

mp

48-50 °C (lit.)

solubility

alcohol: very slightly soluble (cold)(lit.)
benzene: soluble(lit.)
carbon disulfide: soluble(lit.)
diethyl ether: soluble(lit.)
water: insoluble (practically)(lit.)

SMILES string

[O-][N+](=O)c1ccc(Cl)c(c1)[N+]([O-])=O

InChI

1S/C6H3ClN2O4/c7-5-2-1-4(8(10)11)3-6(5)9(12)13/h1-3H

InChI key

VYZAHLCBVHPDDF-UHFFFAOYSA-N

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This Item
185760138630102369
1,4-Dinitrobenzene 98%

Sigma-Aldrich

102369

1,4-Dinitrobenzene

form

solid

form

solid

form

solid

form

-

bp

315 °C (lit.)

bp

246 °C (lit.)

bp

315 °C (lit.)

bp

183.4 °C/34 mmHg (lit.)

mp

48-50 °C (lit.)

mp

31-33 °C (lit.)

mp

48-50 °C (lit.)

mp

170-173 °C (lit.)

solubility

alcohol: very slightly soluble (cold)(lit.), benzene: soluble(lit.), carbon disulfide: soluble(lit.), diethyl ether: soluble(lit.), water: insoluble (practically)(lit.)

solubility

alcohol: soluble, benzene: soluble, diethyl ether: soluble, water: insoluble

solubility

alcohol: soluble (hot), alcohol: very slightly soluble (cold), benzene: soluble, carbon disulfide: soluble, diethyl ether: soluble, water: insoluble

solubility

alcohol: soluble 1g in 300ml, boiling water: soluble 1g in 555ml, cold water: soluble 1g in 12,500ml, benzene: very slightly soluble, chloroform: very slightly soluble, ethyl acetate: very slightly soluble

expl. lim.

22 %

expl. lim.

8.7 %

expl. lim.

22 %

expl. lim.

-

General description

1-Chloro-2,4-dinitrobenzene on incubation with erythrocyte undergoes conjugation with erythrocyte glutathione (GSH) to form 2,4-dinitrophenyl-S-glutathione. It is an irreversible inhibitor of human thioredoxin reductase.

Application

1-Chloro-2,4-dinitrobenzene has been used as alkylating agent to evaluate the depletion of intracellular erythrocyte glutathione (GSH).

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

Flash Point(F)

381.2 °F - closed cup

Flash Point(C)

194 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Y C Awasthi et al.
Blood, 58(4), 733-738 (1981-10-01)
Erythrocyte glutathione (GSH) can be rapidly depleted by incubating the cells with 1-chloro-2,4-dinitrobenzene (CDNB), which forms 2,4-dinitrophenyl-S-glutathione with GSH through the reaction catalyzed by glutathione S-transferase. GSH-CDNB conjugate thus formed stays undegraded within the erythrocytes. This indicates that in the
E S Arnér et al.
The Journal of biological chemistry, 270(8), 3479-3482 (1995-02-24)
Human thioredoxin reductase is a dimeric enzyme that catalyzes reduction of the disulfide in oxidized thioredoxin by a mechanism involving transfer of electrons from NADPH via FAD to a redox-active disulfide. 1-Chloro-2,4-dinitrobenzene (DNCB) is an alkylating agent used for depleting
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