Chemistry:1,2-Naphthoquinone
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| Names | |
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| Preferred IUPAC name
Naphthalene-1,2-dione | |
| Other names
o-Naphthoquinone,
β-naphthoquinone | |
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| Properties | |
| C10H6O2 | |
| Molar mass | 158.156 g·mol−1 |
| Appearance | yellow solid |
| Melting point | 145 to 147 °C (293 to 297 °F; 418 to 420 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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1,2-Naphthoquinone or ortho-naphthoquinone is a polycyclic aromatic organic compound with formula C10H6O2. This yellow solid is prepared by oxidation of 1-amino-2-hydroxynaphthalene with ferric chloride.[1]
Occurrence
This diketone (an ortho-quinone) is a metabolite of naphthalene. It arises from the naphthalene-1,2-oxide.[2]
It is also found in diesel exhaust particles. The accumulation of this toxic metabolite in rats from doses of naphthalene has been shown to cause eye damage, including the formation of cataracts.[3]
See also
- 1,4-Naphthoquinone, an isomer of 1,2-naphthoquinone
References
- ↑ Louis F. Fieser (1937). "1,2-Naphthoquinone". Org. Synth. 17: 68. doi:10.15227/orgsyn.017.0068.
- ↑ Yoshito Kumagai; Yasuhiro Shinkai; Takashi Miura; Arthur K. Cho (2011). "The Chemical Biology of Naphthoquinones and Its Environmental Implications". Annual Review of Pharmacology and Toxicology 52: 221–47. doi:10.1146/annurev-pharmtox-010611-134517. PMID 21942631.
- ↑ Qian, W.; Shichi, H. (2001). "Naphthoquinone-Induced Cataract in Mice: Possible Involvement of Ca2+ Release and Calpain Activation". Journal of Ocular Pharmacology and Therapeutics 17 (4): 383–392. doi:10.1089/108076801753162799. PMID 11572469.
External links
- Troester, M. A.; Lindstrom, A. B.; Waidyanatha, S.; Kupper, L. L.; Rappaport, S. M. (2002). "Stability of Hemoglobin and Albumin Adducts of Naphthalene Oxide, 1,2-Naphthoquinone, and 1,4-Naphthoquinone". Toxicological Sciences 68 (2): 314–321. doi:10.1093/toxsci/68.2.314. PMID 12151627.
- Kikuno, S. et al. (2006). "1,2-Naphthoquinone Activates Vanilloid Receptor 1 through Increased Protein Tyrosine Phosphorylation, Leading to Contraction of Guinea Pig Trachea". Toxicology and Applied Pharmacology 210 (1–2): 47–54. doi:10.1016/j.taap.2005.06.015. PMID 16039679.
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