L-Tryptophan/L-Tryptophane/ (S) -2-Amino-3- (3- indolyl ) Propionic Acid/Indole-3-Alanine

China L-Tryptophan/L-Tryptophane/ (S) -2-Amino-3- (3-indolyl) Propionic Acid/Indole-3-Alanine, Find details about China L-Tryptophan, L-Tryptophane from L-Tryptophan/L-Tryptophane/ (S) -2-Amino-3- (3-indolyl) Propionic Acid/Indole-3-Alanine

Basic Info.

Trademark

OEM

Transport Package

Wooden Case

Origin

China

HS Code

2933990090

Trademark

OEM

Transport Package

Wooden Case

Origin

China

HS Code

2933990090

Product Desciption

Product name: L-Tryptophan
Molecular Weight: 204.23
Molecular Formula: C11H12N2O2

Properties: L- type has the bitter taste, the DL- and the D- type have little sweet taste. 289 °C decompounds, slightly soluble in water, does not dissolve in the ethyl alcohol. Dissolves in the diluted acid or the diluted alkali, the long time illumination will color up. heat together with water can produce the water a small amount of indole, like when heat up under the sodium hydroxide, the cupric sulfate existence, then will produce massive indole. heats up with the acid in the hidden place will be more stable. when coexist with Medicine bulk drugs, carbohydrate, and aldehyde, it is extremely easy to decompose.

Uses: Tryptophan is heterocyclic amino acid, is a kind of important and necessary amino acids for hum.

Item	Specifications	Results
Appearance	White crystals or crystalline powder	Conforms
Assay ,% min	98.5~101.5	99.5
Ph value	5.5-7.0	5.6
Specific rotation	-29.4°~ -32.8°	-30.8°
Loss on drying,% max	0.3	0.11
Residue on ignition,% max	0.10	0.05
Chloride (as Cl),% max	0.05	<0.05
Sulphate(as SO4),% max	0.03	<0.03
Iron (as Fe) , % max	0.003	<0.003
Heavy metals (as Pb),% max	0.0015	<0.0015