Vitamin K₄

Vitamin K₄ is a name for one or more specific compounds with vitamin K activity.

K₄ may refer to menadiol[1][2] or to various menadiol esters, like menadiol diacetate (acetomenaphthone),[3][4] menadiol dibutyrate[4] or menadiol dimalonate.[2] K₄ may also mean various phosphate or sulfate salts, like menadiol sodium diphosphate[2][4] or menadiol sodium disulfate.[4]

• 
  Menadiol
• 
  Menadiol diacetate
• 
  Menadiol dibutyrate

References

1. Fiore LD, et al. (2001). "Anaphylactoid reactions to vitamin K". Journal of Thrombosis and Thrombolysis. 11 (2): 175–183. doi:10.1023/A:1011237019082. ISSN 0929-5305. PMID 11406734.
2. Sebrell WH, et al. (1971). The vitamins; chemistry, physiology, pathology, methods (2nd ed.). Academic Press. p. 443. ISBN 9780126337631.
3. "Vitamin K2 added for nutritional purposes in foods for particular nutritional uses, food supplements and foods intended for the general population and Vitamin K2 as a source of vitamin K added for nutritional purposes to foodstuffs, in the context of Regulation (EC) N° 258/97". EFSA Journal. 6 (11): 822. 2008. doi:10.2903/j.efsa.2008.822. ISSN 1831-4732.
4. Oketch-Rabah HA, Roe AL, Marles RJ (2017). "US Pharmacopeial Convention safety evaluation of menaquinone-7, a form of vitamin K". Nutrition Reviews. 75 (7): 553–578. doi:10.1093/nutrit/nux022. ISSN 0029-6643. PMID 28838081.