Synonym for phylloquinone ... Vitamin K1 or K1(20); 2-methyl-3-phytyl-1,4-naphthoquinone; 3-phytylmenaquinone; isolated from alfalfa;also prepared synthetically; major form of vitamin K found in plants. ... Synonym: phytomenadione, phytonadione, vitamin K1, vitamin K1(20). ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973