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Record Information
Version 1.0
Creation Date 2009-03-06 18:58:03 UTC
Update Date 2013-04-25 08:32:47 UTC
Accession Number T3D0087
Identification
Common Name 2,4-Dinitrophenol
Description 2,4-Dinitrophenol, also called DNP is a yellow solid with no known smell. It dissolves slightly in water. DNP present in water and soil as a pollutant does not easily evaporate to air. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane, leading to a rapid consumption of energy without generation of ATP. 2,4-DNP was used in the 1930s as a weightreduction drug, but this was discontinued in 1938 because of the many reports of adverse effects in people who used it. (R326, R328)
Compound Type
  • Organic Compound
  • Industrial Precursor/Intermediate
  • Aromatic Hydrocarbon
  • Nitrite
Chemical Structure
Thumb
Synonyms
  1. 1'alpha-2,4-Dinitrophenol
  2. 1-Hydroxy-2,4-dinitrobenzene
  3. 2,4 Dinitrophenol
  4. 2,4-Dinitrofenol [Dutch]
  5. 2,4-Dinitrophenol-UL-14C
  6. Aldifen
  7. Alpha-dinitrophenol
  8. Alpha.-dinitrophenol
  9. Camello mosquito coils
  10. Chemox pe
  11. Cobra salts (impregna salts)
  12. Dinitra
  13. Dinitrofenolo(italian)
  14. Dinitrophenol
  15. Dinofan
  16. DNF
  17. DNP
  18. Fenoxyl
  19. Fenoxyl carbon n
  20. Maroxol-50
  21. NIN
  22. Nitro kleenup
  23. Nitrophen
  24. Nitrophen (van)
  25. Nitrophene
  26. Nitrophene (van)
  27. Osmoplastic-r
  28. Osmotox-plus
  29. Shirakiku brand mosquito coils
  30. Tertrosulfur black PB
  31. Tertrosulfur PBR
  32. Tertrosulphur black PB
  33. Tertrosulphur PBR
Chemical Formula C6H4N2O5
Average Molecular Weight 184.1064
Monoisotopic Molecular Weight 184.012021248
Chemical IUPAC Name
2,4-dinitrophenol
CAS Registry Number 51-28-5
SMILES
OC1=CC=C(C=C1[N+]([O-])=O)[N+]([O-])=O
InChI Identifier
InChI=1S/C6H4N2O5/c9-6-2-1-4(7(10)11)3-5(6)8(12)13/h1-3,9H
InChI Key InChIKey=UFBJCMHMOXMLKC-UHFFFAOYSA-N
Chemical Taxonomy
Kingdom Organic Compounds
Super Class Benzenoids
Class Benzene and Substituted Derivatives
Sub Class Phenols and Derivatives
Direct Parent Nitrophenols and Derivatives
Alternative Parents
  • Nitrobenzenes
  • Aminophenol Derivatives
  • Nitronic Acids
  • Nitro Compounds
  • Organic Oxoazanium Compounds
  • Organonitrogen Compounds
Molecular Framework Aromatic Homomonocyclic Compounds
Substituents
  • organonitrogen compound
  • nitronic acid
  • nitro compound
  • organic oxoazanium
  • aminophenol derivative
External Descriptors
  • dinitrophenol(ChEBI)
DrugBank ID Not Available
PubChem Compound ID 1493 Link_out
KEGG ID C02496 Link_out
UniProt ID Not Available
OMIM ID Not Available
ChEBI ID 918 Link_out
BioCyc ID CPD-8179 Link_out
CTD ID D019297 Link_out
Stitch ID 2,4-Dinitrophenol Link_out
PDB ID Not Available
ACToR ID 532
Wikipedia Link http://en.wikipedia.org/wiki/2,4-Dinitrophenol Link_out
Physical Properties
Appearance Yellow, crystalline solid.
Melting Point 115.5 C
Solubility 2.79 mg/mL at 20 °C [SCHWARZENBACH,RP et al.(1988)]
Predicted LogP 1.549648873
Toxicity Profile
Route of Exposure Oral (R329); inhalation (R329) ; dermal (R329)
Mechanism of Action Acute 2,4-dinitrophenol poisoning (from ingestion) involves uncoupling of oxidative phosphorylation, which presumably reduces body's reservoirs of high-energy phosphate. This stimulates oxidative metabolism and, in turn, the heat production of the body. Oxygen consumption, body temperature, respiration and heart rate are all increased. 2,4-Dinitrophenol has been suggested to bind serum proteins such as transthyretin. In fact it was proposed as a therapeutic agent for the prevention/inhibition of amyloid diseases through stabilization of the native fold of transthyretin. (R286, R348, R349)
Metabolism 2,4-DNP can readily enter the body through inhalation and ingestion. It can probably be absorbed through the skin also. Animal studies show that after 2,4-DNP enters the body, the blood can carry it to organs and tissues such as the liver, the kidneys, and the eyes. DNP does not build up in organs and tissues, but it is metabolized via reduction of the nitro groups or broken down to other chemicals. The parent compound and metabolites such as 2-amino-4-nitrophenol, 4-amino-2-nitrophenol and diaminophenol are excreted in the urine. 2,4-DNP is also excreted by mammals, partially unchanged, partially conjugated with glucuronic acid and probably as 2,4-diamenolphenol. (R326, R330)
Toxicity Values LD50: 14-43 mg/kg (Oral, Human) (R330)
Lethal Dose Not Available
Carcinogenicity (IARC Classification) Not Available
Uses/Sources 2,4-Dinitrophenol has been used to make dyes, other organic chemicals, and wood preservatives. It has also been used to make photographic developer, explosives, and pesticides. 2,4-Dinitrophenol exposure may occur from breathing contaminated air, drinking contaminated water, eating contaminated food, or by contact with contaminated soil. (R326, R328)
Minimum Risk Level Acute Oral: 0.01 mg/kg/day (R326)
Health Effects 2,4-DNP can cause cataracts following ingestion of a small dose for short or long periods. This condition could lead to blindness in both eyes. Breathing in, swallowing, or having skin contact with large amounts of DNP can lead to death.(R326)
Symptoms Dermal contact may results in redness, roughness, yellow staining of the skin. Nausea, vomiting, palpitations, collapse, sweating occur after inhalation or ingestion. (R329)
Treatment There is no specific antidote for 2,4-DNP poisoning. Symptomatic treatment includes replacing oxygen and fluids, controlling temperature by administering sponge baths and ice packs, and using a fan to promote air flow and evaporation. In fully conscious patients, administer cold, sugar-containing liquids by mouth as tolerated. In cases of skin contact, bathe and shampoo contaminated skin and hair promptly. (R352)
References
General References
  • R326 — ATSDR - Agency for Toxic Substances and Disease Registry (2002). Toxicological profile for 2,4-dinitrophenol. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]
  • R328 — Wikipedia. 2,4-Dinitrophenol. Last Updated 11 July 2009 [Link]
  • R329 — International Programme on Chemical Safety (IPCS) INCHEM (1996). Poison Information Monograph for 2,4-Dinitrophenol. [Link]
  • R286 — Clayton GD and Clayton FE (eds) (1993-1994). Patty's Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D, 2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons Inc.
  • R348 — Morais-de-Sa E, Neto-Silva RM, Pereira PJ, Saraiva MJ, Damas AM: The binding of 2,4-dinitrophenol to wild-type and amyloidogenic transthyretin. Acta Crystallogr D Biol Crystallogr. 2006 May;62(Pt 5):512-9. Epub 2006 Apr 19. [16627944 Link_out]
  • R349 — Xie Y, Zhang D, Ben-Amotz D: Protein-ligand binding detected using ultrafiltration Raman difference spectroscopy. Anal Biochem. 2008 Feb 1;373(1):154-60. Epub 2007 Nov 4. [18023404 Link_out]
  • R330 — National Research Council (1981). Drinking Water & Health, Volume 4. Washington, DC: National Academy Press.
  • R352 — Reigart JR, Roberts RR (1999). Recognition and Management of Pesticide Poisoning, Chapter 11: Nitrophenolic and Nitrocresolic Herbicides. Washington, DC: US EPA. [Link]

Targets

1. Transthyretin

Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.

2,4-Dinitrophenol has been suggested to bind serum proteins such as transthyretin. In fact it was proposed as a therapeutic agent for the prevention/inhibition of amyloid diseases through stabilization of the native fold of transthyretin. (R348,R349)
UniProt ID: P02766 Link_out
Gene: TTR Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out
References:
  • R348 — Morais-de-Sa E, Neto-Silva RM, Pereira PJ, Saraiva MJ, Damas AM: The binding of 2,4-dinitrophenol to wild-type and amyloidogenic transthyretin. Acta Crystallogr D Biol Crystallogr. 2006 May;62(Pt 5):512-9. Epub 2006 Apr 19. [16627944 Link_out]
  • R349 — Xie Y, Zhang D, Ben-Amotz D: Protein-ligand binding detected using ultrafiltration Raman difference spectroscopy. Anal Biochem. 2008 Feb 1;373(1):154-60. Epub 2007 Nov 4. [18023404 Link_out]