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Aldrich's chemicals catalog, the "Aldrich Catalog and Handbook" is often used as a handbook due to the inclusion of structures, physical data, and literature references. The Sigma Logo. Sigma is the Sigma-Aldrich's main biochemical supplier, with offerings including antibiotics , buffers , carbohydrates , enzymes , forensic tools , hematology ...
Chemexper Chemical Directory catalogue chemicals CASno Structure SMILES "ChemExper". Chemxpert Database Chemxpert Chemical Database small molecules database buyers,suppliers "ChemxpertDB". 10,00000 Chemical Book East West University: commercially available compounds CASno, suppliers, properties "Chemical Book". 200,000 Chemical Register
VWR International is an American company involved in the distribution of research laboratory products, with over 1,200,000 items to more than 250,000 customers in North America and Europe. The U.S. division is headquartered in Radnor, Pennsylvania .
4,4′-Methylenebis(2-chloroaniline) (also known as MOCA, MBOCA, and bisamine) is a substance used as a curing agent in polyurethane production. [3] MOCA is an aromatic amine which is structurally similar to benzidine, a known human bladder carcinogen.
Tosyl azide is one of the most stable azide compounds but is still regarded as a potential explosive and should be carefully stored, while particular caution is vital for all reactions in which it is heated at or above 100 °C.
Trithioacetone was first made in 1889 by Baumann and Fromm, by reaction of hydrogen sulfide with acetone. [6] In the presence of an acidified ZnCl 2 catalyst at 25 °C, one obtains a product that is 60–70% trithioacetone, 30–40% of 2,2-propanedithiol, and small amounts of two isomeric impurities, 3,3,5,5,6,6-hexamethyl-1,2,4-trithiane and 4-mercapto-2,2,4,6,6-pentamethyl-1,3-dithiane. [6]