“توجه: استفاده از این دایرکتوری در وب سایت ها، کتاب ها و مقالات فقط با ارجاع دادن به “یابش” مجاز می باشد!”
Archives Collection of magazines and peer-reviewed electronic journals published by ACS Publications (American Chemical Society).
Royal Society of Chemistry Electronic journal collection of over 40 titles published by the Royal Society of Chemistry (RSC), including archives going back to 1841.
The central index for chemical literature since 1907 (and earlier): articles, conference proceedings, patents, dissertations, books, etc. Individual user registration and login are required
Essential resource for finding data and associated literature references for organic and inorganic/organometallic compounds. Search by structure, molecular formula and text-based facts
This a free literature database from the National Library of Medicine. It is the main database in medicine but also covers a lot of chemistry.
The Merck Index Online is a fully-searchable database with over 11,500 monographs on chemicals, drugs, and biologicals. In addition, the Merck Index includes a reference of over 500 named organic reactions and reference tables that include common abbreviations, chemical structures, constants, and conversions.
CHEMnetBASE is a collection of chemistry databases from CRC Press, which can be subscribed to individually or collectively.
WebCSD Established in 1965, the CSD is the world’s repository for small-molecule organic and metal-organic crystal structures. The CSD currently contains almost 800,000 entries from x-ray and neutron diffraction analyses, and is continually updated with new structures (>50,000 new structures each year) and with improvements to existing entries.
PubChem is a search tool for chemical information, divided into three areas: Compounds, Substances, and BioAssays.
ChemSpider is a free access service providing a structure centric community for chemists. Providing access to millions of chemical structures and integration to a multitude of other online services, ChemSpider is the richest single source of structure-based chemistry information.