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L-Tryptophan CAS NO.73-22-3

Used as a food fortifier and antioxidant. Also used in medicine and other aspects. It is synthesized from indole aldehyde. It can also be made by trypsin decomposition and synthesis.

Additional information

Weight 25 kg
Dimensions 35 × 35 × 45 cm

White crystalline powder


0.5% Max

Specification grade



99% min

Single unknown impurity

0.5% Max

Product data and descriptions listed are typical values, not intended to be used as specification.

Identifying Information

Product Name: L-Tryptophan
Synonyms:L(-)-Tryptophan; (S)-2-Amino-3-(1H-indol-3-yl)propanoic acid; L-alphs-Amino-3-indolepropionic acid;
CAS-No.: 73-22-3
Molecular Formula: C11H12N2O2
Molecular weight: 204.23

Chemical Properties

Boiling Point: 447.9±35.0 °C at 760 mmHg
Melting point: 280-285 ºC
Flash Point: 224.7±25.9 °C
Density: 1.34
Index of Refraction: 1.698
Vapour Pressure: 0.0±1.1 mmHg at 25°C
Water solubility: 11.4 g/L (25 ºC)

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