Benzeneboronic Acid 98%

L-Pyroglutamic acid is used in the synthesis of Nonproteinogenic amino acids such as (3S4R)-34-dimethyl-L-pyroglutamic acid and (3S4R)-34-dimethyl-L-glutamine. Chiral N-heterocyclic carbenes (NHCs) as catalysts for the asymmetric dimerization of alkylarylketenes to give the corresponding -quaternary -alkylidenyl--lactones.

For R&D use onlynot for drug household or other uses.

Pyroglutamic acid (also known as PCA 5-oxoproline pidolic acid or pyroglutamate for its basic form) is an uncommon and little studied amino acid derivative in which the free amino group of glutamic acid or glutamine cyclizes to form a lactam. It is a metabolite in the glutathione cycle that is converted to glutamate by 5-oxoprolinase.