5-aminolevulinic acid salt, process for producing the same and use thereof
A 5-aminolevulinic acid salt which is useful in fields of microorganisms, fermentation, animals, medicaments, plants and the like; a process for producing the same; a medical composition comprising the same; and a plant activator composition comprising the same.
1. A process for producing a 5-aminolevulinic acid sulfonate salt represented by the following formula (II):
HOCOCH 2 CH 2 COCH 2 NH 2 .HOSO 2 R 2 (II)
wherein R 2 represents a phenyl group substituted with lower alkyl,
which process comprises eluting 5-aminolevulinic acid adsorbed on a cation exchange resin, and mixing the eluate with sulfonic acid having a phenyl group substituted with lower alkyl.
2. The process according to claim 1 , wherein the 5-aminolevulinic acid is eluted with aqueous ammonia.