The present invention relates to a process for preparing a mixture M1 of enol phosphate isomers devoid of (E,E) isomer and comprising at least 98% of (E,Z) isomer, at least 0.1% of (Z,Z) isomer and at least 0.1% of (Z,E) isomer, comprising bringing a mixture of isomers of said enol phosphate comprising a detectable amount of (E,E) isomer into contact with a hydrolysable dienophile in an organic solvent, followed by base hydrolysis of the medium obtained and elimination of the adduct formed, in order to obtain the mixture M1 devoid of (E,E) isomer.

The present disclosure provides compounds of Formula (VIA), Formula (IIIA), Formula (IVA), and Formula (VA). The compounds are prodrugs of alpha-ketoglutarate, alpha-ketobutryrate, alpha-ketoisovalerate, and alpha-ketoisohexanoate, which are useful in treating or preventing age related diseases, disorders, or conditions. ##STR00001##

The present disclosure provides compounds of Formula (VIA), Formula (IIIA), Formula (IVA), and Formula (VA). The compounds are prodrugs of alpha-ketoglutarate, alpha-ketobutryrate, alpha-ketoisovalerate, and alpha-ketoisohexanoate, which are useful in treating or preventing age related diseases, disorders, or conditions. ##STR00001##

Organophosphorus or organosulfur compounds and methods of using the compounds as cleaning agents, particle dispersants, or surfactants, or to remove, disperse or inhibit the growth of a biofilm, or inhibit the growth of, or kill a fungus or bacteria are provided.

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; a first additive containing at least one compound among compounds represented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; a first additive containing at least one compound among compounds represented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

The present invention relates to a process for preparing a mixture M1 of enol phosphate isomers devoid of (E,E) isomer and comprising at least 98% of (E,Z) isomer, at least 0.1% of (Z,Z) isomer and at least 0.1% of (Z,E) isomer, comprising bringing a mixture of isomers of said enol phosphate comprising a detectable amount of (E,E) isomer into contact with a hydrolysable dienophile in an organic solvent, followed by base hydrolysis of the medium obtained and elimination of the adduct formed, in order to obtain the mixture M1 devoid of (E,E) isomer.

The present disclosure provides compounds and compositions capable of extending lifespan, and methods of use thereof.

The present disclosure provides compounds and compositions capable of extending lifespan, and methods of use thereof.

Disclosed is a method for linkage recovery of an organic acid in an aqueous organic acid solution. The method comprises: mixing a solution with an organic acid concentration lower than 20 wt % with a specific extractant and then subjecting same to counter-current extraction so as to obtain an extract phase and a raffinate phase; and subjecting the extract phase together with a solution with an acid concentration higher than 70 wt % to an azeotropic rectification so as to recover an organic acid. When the concentration of the aqueous organic acid solution is 20 wt %-70 wt %, the aqueous organic acid solution is extracted and concentrated to make the concentration of the aqueous organic acid solution higher than 70 wt %.