A monofunctional phenolic compound comprising one or more vinylbenzyl groups, including a structure represented by Formula (1) or (2)
- wherein, in Formulae (1) and (2), R1 represents a vinylbenzyl group and R2 represents a hydrogen atom, an alkyl group, or an aryl group;
- in Formula (1), n is an integer of 1 to 5, m is an integer of 0 to 4, and the sum of n and m is 5;
- in Formula (2), n is an integer of 1 to 7 and m is an integer of 0 to 6;
- in Formula (2), the sum of n and m is 7;
- and, in Formulae (1) and (2), R1 may be identical to or different from each other and R2 may be identical to or different from each other.