vitamin K1

vitamin K1

n. one of the two K vitamins, (C31H46O2). It is fat-soluble and occurs naturally as the trans isomer. Chemically it is 2-methyl-3-phytyl-1,4,-naphthoquinone.
Syn. -- phylloquinone, phytonadione, antihemorrhagic vitamin..
[WordNet 1.5 +PJC]

vitamin K2

,

vitamins K2

n. one of the two K vitamins, actually a mixture of homologous fat-soluble substituted naphthoquinones (called menaquinones), (C11H7O2[C5H8]nH), where n may be 1 to 13 but is mostly 7 to 9. The term is also used for synthetic compounds resembling vitamin K2 and having the same physiological action. The individual components of vitamin K2 are also referred to by the number of isoprenyl units in the side chain (the number n in the formula), as for menadione, having no units at that position of the naphthaquinone ring, and also called vitamin K2(0) (and also called vitamin K3). [MI11]
Syn. -- menaquinones, antihemorrhagic vitamin..
[WordNet 1.5 +PJC]

 

New - Add Dictionary Search to Your Site

You can add a free dictionary search box to your own web site by copying and pasting the following HTML into one of your web pages:

<form action="http://www.freedict.co.uk/search.php" method="post">
 <p style="text-align: center; font-family: sans-serif;">
  <a style="font-weight: bold;" href="http://www.freedict.co.uk/"
     title="FreeDict free online dictionary">FreeDict</a>
  <input type="text" name="word" size="20" value="" />
  <input type="submit" name="submit" value="Search Dictionary" />
 </p>
</form>

 

a b c d e f g h i j k l m n o p q r s t u v w x y z

Tue 11th December 2018