Menadione

Not to confuse with menaquinone-3, aka MK-3, a version of vitamin K2 series having 3 isoprene groups
Menadione[1]
Skeletal formula
Ball-and-stick model
Names
Preferred IUPAC name
2-Methylnaphthalene-1,4-dione
Other names
Menaphthone; Vitamin K3; β-Methyl-1,4-naphthoquinone; 2-Methyl-1,4-naphthodione; 2-Methyl-1,4-naphthoquinone
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.000.338 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C11H8O2/c1-7-6-10(12)8-4-2-3-5-9(8)11(7)13/h2-6H,1H3 checkY
    Key: MJVAVZPDRWSRRC-UHFFFAOYSA-N checkY
  • InChI=1/C11H8O2/c1-7-6-10(12)8-4-2-3-5-9(8)11(7)13/h2-6H,1H3
    Key: MJVAVZPDRWSRRC-UHFFFAOYAY
  • O=C\2c1c(cccc1)C(=O)/C(=C/2)C
Properties
C11H8O2
Molar mass 172.183 g·mol−1
Appearance Bright yellow crystals
Density 1.225g/cm3
Melting point 105 to 107 °C (221 to 225 °F; 378 to 380 K)
Insoluble
Pharmacology
B02BA02 (WHO)
  • Contraindicated (India)[2]
Legal status
  • Generally Rx or withdrawn for human use; approved in animal feed
Hazards
Flash point 113.8 °C (236.8 °F; 386.9 K)
Lethal dose or concentration (LD, LC):
0.5 g/kg (oral, mouse)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Menadione is a synthetic[3][4] organic compound with the formula C6H4(CO)2C2H(CH3). It is an analog of 1,4-naphthoquinone with a methyl group in the 2-position.[5] It is sometimes called vitamin K3. Use is allowed as a nutritional supplement in animal feed because of its vitamin K activity.

  1. ^ The Merck Index, 11th Edition, 5714
  2. ^ Cite error: The named reference dui was invoked but never defined (see the help page).
  3. ^ "Menadione". go.drugbank.com. Retrieved 2024-09-01.
  4. ^ Hirota, Yoshihisa; Tsugawa, Naoko; Nakagawa, Kimie; Suhara, Yoshitomo; Tanaka, Kiyoshi; Uchino, Yuri; Takeuchi, Atsuko; Sawada, Natsumi; Kamao, Maya; Wada, Akimori; Okitsu, Takashi (2013-11-15). "Menadione (vitamin K3) is a catabolic product of oral phylloquinone (vitamin K1) in the intestine and a circulating precursor of tissue menaquinone-4 (vitamin K2) in rats". The Journal of Biological Chemistry. 288 (46): 33071–33080. doi:10.1074/jbc.M113.477356. ISSN 1083-351X. PMC 3829156. PMID 24085302.
  5. ^ Castro FA, Mariani D, Panek AD, Eleutherio EC, Pereira MD (2008). Fox (ed.). "Cytotoxicity mechanism of two naphthoquinones (menadione and plumbagin) in Saccharomyces cerevisiae". PLOS ONE. 3 (12): e3999. Bibcode:2008PLoSO...3.3999C. doi:10.1371/journal.pone.0003999. PMC 2600608. PMID 19098979.