L-Pyroglutamic Acid

 Color crystal. Melting point 162-163 ℃, soluble in water, alcohol, acetone and glacial acetic acid, slightly soluble in ethyl acetate, insoluble in ether. Oxidized proline is also called L-pyroglutamic acid. The relative molecular weight is 129.12. The melting point is 162-163 ℃. It is insoluble in ether, slightly soluble in ethyl acetate, soluble in water (40 at 25 ℃), ethanol, acetone and glacial acetic acid. The specific rotation was - 11.9 ° (C = 2, H2O). Its sodium salt can be used as a moisturizer in cosmetics. Its moisturizing effect is better than glycerin and sorbitol. It is non-toxic and non-irritating. It can be used in skin care and hair care cosmetics. It can inhibit tyrosine oxidase, prevent the deposition of melanoid, and whiten the skin. It can soften the keratin and can be used in nail cosmetics. It can also be used as a surfactant, detergent, chemical reagent, For resolution of racemic amines; organic intermediates.