Sulfonamides and Derivatives

2-(4-(Benzylamino)-2-ethylbutyl)-5,6-dimethoxy-2,3-dihydroinden-1-one hydrochloride is a drug product used as an analytical standard for HPLC. It is a natural metabolite from the metabolism of lisinopril and other prodrugs. This impurity is found in drugs that are metabolized by cytochrome P450 enzymes including lisinopril, captopril, enalapril and benazepril. The impurity may be present in drugs with a niche market such as captopril and benazepril or drugs with a high purity such as enalapril. 2-(4-(Benzylamino)-2-ethylbutyl)-5,6-dimethoxy-2,3-dihydroinden-1-one hydrochloride is typically synthesized by the reaction of 4-(benzylamino

4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid, ethyl ester 1,1-dioxide (4HMBC) is an organic compound that is used as a precursor in the synthesis of other chemicals. 4HMBC is used to produce xylene, sulfoxide and diethyl ether by reacting with magnesium and ethylene. It is also used in the production of dimethylformamide, a solvent that is useful for the manufacture of many products including pharmaceuticals. 4HMBC reacts with methyl iodide to form 4-(dimethylamino)pyridine which can be used for the synthesis of piroxicam. The chemical has been shown to be effective as an insecticide against ants and cockroaches. It can also be used to synthesize dyes or pigments. The chemical can be obtained by methylating 4HBC with methanol in the presence