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Key Documents

Safety Information

T0254

Sigma-Aldrich

L-Tryptophan

≥98% (HPLC)

Synonym(s):

(S)-2-Amino-3-(3-indolyl)propionic acid, L-α-Amino-3-indolepropionic acid

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About This Item

Empirical Formula (Hill Notation):
C11H12N2O2
CAS Number:
Molecular Weight:
204.23
Beilstein:
86197
EC Number:
MDL number:
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.26

product name

L-Tryptophan, reagent grade, ≥98% (HPLC)

grade

reagent grade

Quality Level

Assay

≥98% (HPLC)

form

powder

color

white to off-white

mp

280-285 °C (dec.) (lit.)

solubility

0.5 M HCl: 50 mg/mL

application(s)

cell analysis

SMILES string

N[C@@H](Cc1c[nH]c2ccccc12)C(O)=O

InChI

1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1

InChI key

QIVBCDIJIAJPQS-VIFPVBQESA-N

Gene Information

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Application

L-tryptophan has been used for the isolation of bone marrow–derived neutrophils. It has also been used to identify the use of Raman microscopy as a tool to study the network of neurons in pathologically normal retina.

Biochem/physiol Actions

Tryptophan (Trp) is a heterocyclic, essential amino acid associated with growth, reproduction and immunity. Increased availability of tryptophan is necessary for the regulation of mood, cognition and behavior. The uptake of tryptophan by the brain depends on the plasma ratio of Trp to all of the other large neutral amino acids. Higher the ratio, greater is the Trp uptake.

Other Notes

Amino acid precursor of serotonin and melatonin

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

T0254-VAR:
T0254-5G:
T0254-500G:
T0254-1G:
T0254-25G:
T0254-1KG:
T0254-100G:
T0254-1G-KC:
T0254-BULK:


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Raman microscopy of porcine inner retinal layers from the area centralis
J. Renwick
Molecular Vision (2007)
Tryptophan Catabolism Restricts IFN-??Expressing Neutrophils and Clostridium difficile Immunopathology
Mohamad El-Zaatari
Journal of Immunology (2014)
Effects of tryptophan loading on human cognition, mood, and sleep.
Neuroscience and Biobehavioral Reviews, 34(3) (2010)
Amino acids: metabolism, functions, and nutrition.
Wu G
Amino Acids (2009)
Heidi Barth et al.
Critical reviews in microbiology, 40(4), 360-368 (2012-11-24)
Indoleamine-2,3-dioxygenase (IDO) is an enzyme that catabolises tryptophan - an essential amino acid critical for T cell proliferation. Initially recognized as a first line of host defense against infectious pathogens, IDO has been subsequently identified as an important immune-regulator inhibiting

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