This is the ejournal platform which is provided by Royal Society of Chemistry (RSC). 

ACS Publications is the E-journal platform of American Chemical Society.

Covering more than 100 of the world's leading organic chemistry journals, Index Chemicus is text and
substructure-searchable, and offers full graphical summaries, important reaction diagrams, and complete bibliographic information.
 

You can cross-search with other databases by Web of Science

Current Chemical Reactions delivers the latest synthetic methods reported in over 100 of the world's leading organic chemistry journals.
Each reaction provides complete reaction diagrams, critical conditions, bibliographic data, and author abstracts.

You can cross-search with other databases by Web of Science

The collective search of a chemical book (chemical handbook, experiment chemistry lecture, standard scientific term dictionary) published in Japan is possible.

CAS SciFinder-n is a research discovery tool that allows college students and faculty to access a wide diversity of research from many scientific disciplines, including biomedical sciences, chemistry, engineering, material science, agricultural science, and more.

The INIS Bibliographic Database covers the world's literature on the peaceful applications of nuclear science and technology.