Vitamin K1-d7

Vitamin K1-d7 is intended for use as an internal standard for the quantification of vitamin K1 (Item No. 21051) by GC- or LC-MS. Vitamin K1 is a fat-soluble, dietary nutrient that is essential for the synthesis of proteins important for blood-clotting, bone metabolism, and cell growth.{29936} It is found in the photosynthetic tissues of green, leafy plants, where it acts as an electron acceptor forming part of the electron transport chain of Photosystem I.{33156} Vitamin K1 also serves as a precursor to vitamin K2 and is reported to exhibit anticancer activity in various cell lines.{29494,29935}