ChemExper ChemExper
可以查询的条件包括化合物名、分子式、CAS编号或SMILES，检索结果中除了提供结构预览，还可以下载mol格式的化合物3D结构源文件，可直接导入到ChemDraw、ISIS Draw、Sybyl等软件中。此外，还可查看化合物的供应商信息。 ChemExper is a company joining together the areas of chemistry, computer science and telecommunication. The ChemExper Chemical Directory is a free service that allows to find a chemical by its molecular formula, IUPAC name, common name, CAS number, catalog number, substructure or physical characteristics as well as chemical suppliers. This database contains currently more than 10 millions chemicals, 16000 MSDS, 10000 IR spectra and more than 2000 chemical suppliers. You may also SUBMIT your own data!