New derivative of indazole or a salt thereof, intermediate product in its production, antioxidant that uses it, and use in an indazole derivative or salt thereof
An antioxidant containing at least one compound represented by the following formula (1) or a salt thereof as an active ingredient ** Formula **Un antioxidante que contiene al menos un compuesto representado por la siguiente fórmula (1) o una sal del mismo como un ingrediente activo**Fórmula**