CAS (or CAS Registry Number or CAS Number or CAS Rn or CAS#) is the number for each chemical substance in literature assigned by Chemical Abstracts Service (CAS) of American Chemical Society, so as to avoid confusion of variety of names and make chemical substance database search more convenient.

Chemical CAS, developed by Chem-maker, is designed to search register information of chemical substance, including: CAS, English name, Chemical Name, English synonyms, Chinese name, Chinese synonyms, EINECS (European Inventory of Existing Commercial Substances) , Molecular Formula, Molecula Weight, ICHI (International Chemical Identifier), Molecular Structure. Search results are presented as lists by searching CAS, English names, English synonyms, Chinese names, Chinese synonyms. Click one substance on the list to review detailed information.
ChemicalCAS collects 325234 chemical data for now, and the data is still growing. We will update the data to be the largest and most complete chemical substance database.

ChemicalCAS is designed for the belief of simplicity, abandoning clutter and complex layout of other similar APP. No ads included, data localization, open to retrieve make it convenient and practical.

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