Synonyms for the term "New J Chem" are limited, as it specifically refers to a scientific journal. However, there are related phrases and alternative expressions that can be used. For instance, "New Journal of Chemistry" can serve as a substitute for "New J Chem". Additionally, one could use descriptors such as "cutting-edge chemistry journal" or "leading publication in the field of chemistry". It is important to note that these alternatives may not precisely convey the same meaning as the specific journal title but can be employed to refer to similar scientific publications within the chemistry domain.