el subproducto - byproduct, derivative, secondary product, spinoffSpanish example: El cloroformo es un subproducto de la desinfección del agua.
English example: Chloroform is a byproduct of disinfecting water.
Source: el subproducto - byproduct, derivative, secondary product, spinoff (https://www.123teachme.com/spanish_feeds/word_of_the_day/2020/6/13)