Photochromic hydroxyurethane compound

A photochromic hydroxyurethane compound having at least one of hydroxyurethane constitutional unit represented by Formula (1), on a condition of having in a molecule at least one photochromic moiety as a photochromic minimum unit selected from a naphthopyran skeleton:

• —X—O—CO—NH— (1)
• in the formula, X is an oxygen-containing chain organic group having a hydroxyl group as a substituent, or an oxygen-containing chain organic group in which a hydrogen atom of the hydroxyl group is substituted with the following groups (A) to (E):
• (A) a photochromic group having the photochromic moiety,
• (B) a polymerization reactive group having a polymerizable substituent,
• (C) an alkyl group having 1 to 10 carbon atoms,
• (D) a cycloalkyl group having 3 to 10 carbon atoms, or
• (E) an aryl group having 6 to 14 carbon atoms,
• where the groups (C) to (E) each is allowed to be bonded to an oxygen atom derived from a hydroxyl group via the oxygen-containing chain organic group.