[Isolation and structure identification of the main photolysis product in vitamin K1].
OBJECTIVE
To isolate and identify an unknown photolysis product in Vitamin K1.


METHODS
A column chromatography method was used to prepare the impurity, and spectrometric analyses of ultraviolet spectrum, infrared spectrum, mass spectrum and nuclear magnetic resonance spectrum were carried out to identify its structure.


RESULTS
Its structure is 2-methyl-3-(3-hydroxy-3, 7, 11, 15-tetramethyl-1-hexadecenyl)-1, 4-naphthoquinone.


CONCLUSIONS
The structure of the photolysis product has been identified.
Zheng
Yan
Y
Department of Pharmaceutical Analysis, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
Chao
Ruo-Bing
RB
D015394:Molecular Structure; D009285:Naphthoquinones / Q000737:chemistry* / Q000302:isolation & purification; D010782:Photolysis; D013056:Spectrophotometry, Ultraviolet; D010837:Vitamin K 1 / Q000032:analysis / Q000737:chemistry*
C513395:2-methyl-3-(3-hydroxy-3,7,11,15-tetramethyl-1-hexadecenyl)-1,4-naphthoquinone; D009285:Naphthoquinones; D010837:Vitamin K 1