Fluorine-containing compound and contrast medium

A fluorine-containing compound represented by General Formula (1) below,

• General Formula (1), R1, R2, R3, and R4 each independently represent a C1-10 alkyl group unsubstituted or substituted with a substituent containing no fluorine atoms, and X is a substituent represented by any of General Formulae (2-1), (2-2), and (2-3)),
• (in General Formula (2-1), L1 is either a C1-16 chain hydrocarbon group unsubstituted or substituted with a substituent containing no fluorine atoms or a linking group containing a C6-12 aryl group unsubstituted or substituted with a substituent containing no fluorine atoms, and m is an integer of 1 to 5),
• (in General Formula (2-2), L3 is either a C1-16 chain hydrocarbon group unsubstituted or substituted with a substituent containing no fluorine atoms or a linking group containing a C6-12 aryl group unsubstituted or substituted with a substituent containing no fluorine atoms, and p is an integer of 1 to 5), and
• (in General Formula (2-3), L4 is either a C1-16 chain hydrocarbon group unsubstituted or substituted with a substituent containing no fluorine atoms or a linking group containing a C6-12 aryl group unsubstituted or substituted with a substituent containing no fluorine atoms, and q is an integer of 1 to 5).