Appearance

White powder

Assay

98.0 ~ 102.0%

Specific Rotation [a]n20

+14.5º ~ +16.5º

Transmittance

≥95%

Loss on drying

≤4.5%

Residue on ignition

≤0.2%

pH

4.5~6.0

Heavy metals

≤10PPM

Arsenic

≤3PPM

Lead

≤1PPM

Organic volatile Impurities

In conformity with FCCIV/USP24

Other related substances

≤2.0%

5-benzyl-3.6-dioxo-2-piperazineacetic acid

≤1.5%

L-a-aspartyl L-phenylalanine

0.25% max

L-phenylalanine

0.5% max

Total acrobic count

≤100CFU/g

Moulds and yeasts

≤100CFU/g

E.Coli

Negative

Salmonella S.D.

Negative