About Us


DeWeiChem is an online catalog of fine and specialty chemicals for laboratory research, pilot studies and bulk production. The catalog currently lists 40,200+ compounds, each identified by its CAS Registry Number.

Our main product lines include Nucleotide, Extracts, Inorganic Compounds, Norborn, Polymer, Protein, Peptide and Sterone.

Frequently requested items: (R)-tert-butyl 2-(cyanomethyl)pyrrolidine-1-carboxy (CAS 2010139-13-6), 1A-AZACYCLOBUTA[CD]PENTALENE-2-CARBOXYLIC ACID OCTAHYDRO-1-OXO- (CAS 155931-80-9), Acetamide, N-[[[(dimethylamino)methylene]amino]thioxomethyl]-N-methyl- (CAS 299175-13-6), Roxindole mesylate (CAS 119742-13-1), 4H-Pyrano[2,3-b]pyridin-4-one, 3-(4-hydroxyphenyl)- (CAS 884501-13-7).

For pricing, specifications or custom packaging, please send an inquiry from the product page and our team will reply by email.