N-Acetyl-L-Methionine

Item

Specification

Appearance

White crystals or crystalline powder

Specific Rotation[α]D20

-18.0° to -22.0°

State of solution

Clear and colorless

Not less than 95.0%

Heavy Metals (Pb)

Not more than 20ppm

Aresenic (As2O3)

Not more than 2ppm

Other amino aicds

No spot

Loss on drying

Not more than 0.5%

Residue on ignition

Not more than 0.10%

Assay

99.0% to 100.5%

pH

1.7 to 3.0