1,2,3-Trithiane-4-pentanoic acid Appearance/Package/Shipping/Storage
package
storage condition
Store in cool & dry place,Keep away from strong light and heat
1,2,3-Trithiane-4-pentanoic acid literature
Preparation method of lipoic acid impurity A
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, (2021/08/11)
The invention relates to a preparation method of a lipoic acid impurity A, and belongs to the field of compound synthesis. The invention aims to overcome the defects of complex operation and harsh reaction conditions in the prior art, and provides the preparation method of the lipoic acid impurity A. The preparation method is mild in condition and high in product purity. The preparation method comprises the following steps: (1) dissolving lipoic acid in a reaction solvent, adding an oxidant for reaction, and removing solids and the solvent after the reaction is completed to obtain a compound B; (2) respectively adding the compound B, sodium thiosulfate and a catalyst into water, then adding hydrochloric acid, carrying out hydrolysis ring-opening reaction, and filtering after the reaction is completed to obtain a compound C; and (3) respectively adding the compound C, sodium sulfide and formaldehyde into the reaction solvent for reaction, extracting after the reaction is completed, drying, and purifying to obtain a compound D lipoic acid impurity A. The method is mild in condition, and the prepared lipoic acid impurity A is high in purity.
Preparation method of lipoic acid process impurity
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, (2020/07/12)
The invention relates to a preparation method of a lipoic acid process impurity namely 1,2,3-trithiocyclohexane-4-valeric acid, and belongs to the technical field of preparation of lipoic acid impurities. The preparation method comprises the following steps: carrying out saponification, vulcanization cyclization, acidification, and refining on a lipoic acid intermediate namely 6,8-dichloroethyl caprylate to obtain the product. The preparation method is simple in process, and high in operability and the product is easy to purify.
1,2,3-Trithiane-4-pentanoic acid Upstream and downstream
1204245-29-3 Upstream product
1204245-29-3 Downstream Products