2 results about "Tert-butyl methyl ether" patented technology

This application discloses a method for detecting astaxanthin content. The provided method includes the following steps: mixing the sample to be tested with acetone to prepare a test solution; performing high-performance liquid chromatography (HPLC) on the test solution. The HPLC conditions include: using tert-butyl methyl ether as mobile phase A and a mixed solution of methanol and acetonitrile as mobile phase B, with isocratic elution. The provided detection method uses HPLC, employing a mixed solvent of tert-butyl methyl ether and methanol-acetonitrile as the mobile phase, and successfully achieves efficient and rapid separation of astaxanthin through isocratic elution. The chromatographic peak shape is excellent, effectively overcoming interference from proteins, lipids, nutrients, and ionic components in a complex matrix, providing a reliable analytical tool for assessing the intestinal absorption characteristics of astaxanthin.

The application discloses a preparation method and production process of a six-membered aromatic ring fused pyrrole compound, and belongs to the field of organic synthesis. The six-membered aromatic ring fused pyrrole compound of the target compound can be obtained in a high yield even under normal pressure by using specific low-boiling-point solvents (a mixed system of toluene and water). In addition, in the post-treatment process after the reaction is completed, a method of sequentially using sodium chloride aqueous solution washing and t-butyl methyl ether beating is used, so that the by-products can be effectively removed in the post-treatment process, and the product properties are improved.