L-Tryptophan CAS No.: 73-22-3

Chemical Name: L-Tryptophan

CAS No.: 73-22-3

Assay: 98.5%~101.5% 

Appearance: White to yellowish crystals or crystalline powder


product description

L-Tryptophan More Details


ItemSpecifications USP32
AppearanceWhite to yellowish crystals or crystalline powder
Specific rotation [a]D20/
Specific rotation [a]D25-29.4°~-32.8°
Chloride (CL)≤0.05%
Iron (Fe)≤30 ppm
Sulfate (SO4)≤0.03%
Heavy metals≤15 ppm
Arsenic (As)/
Other amino acids/
Ninhydrin active substance/
Loss on drying≤0.30%
Ignition residue≤0.10%
Organic volatiles/

L-Tryptophan Usage

 L-tryptophan is a neutral aromatic amino acid containing indolyl. It is one of the essential amino acids in human and animal life activities. It plays an important role in the growth, development and metabolism of human and animal, and is called the second essential amino acid, which is widely used in medicine, food and feed.

L-Tryptophan Packaging and Shipping:

25KG/Bag or drum or as per buyer requirements. 

L-Tryptophan Storage

Store in dry, cool and well ventilated place.Keep container closed. Keep out of light and moisture. Store separately from oxidizer.