Item

Specification

Appearance

Off-white or white powder

Identification

HPLC:The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay.

Specific Rotation

+20.0°~ +22.0°

Loss on Drying

≤l .0%

Residue on Ignition

≤0.2%

L-Histidine

≤0.3%

Heavy Metals

≤10.0ppm

Lead

≤3.0ppm

Arsenic

≤1.0ppm

Cadmium

≤0.5ppm

Mercury

≤0.1ppm

Total Plate Count

≤1000cfu/g

Yeasts&Molds

≤100cfu/g

E.Coli

Negative

Staphylococcus Aureus

Negative

Pseudomonas Aeruginosa

Negative

Assay

99.0%~101.0%

Purity

≥99.0%