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Merck
CN

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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25 ML
CN¥561.40
1 L
CN¥1,663.26
3 L
CN¥1,931.88
18 L
CN¥10,871.32

CN¥561.40


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25 ML
CN¥561.40
1 L
CN¥1,663.26
3 L
CN¥1,931.88
18 L
CN¥10,871.32

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

CN¥561.40


Please contact Customer Service for Availability

Request a Bulk Order

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

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This Item
345334345326345261
mp

25-33 °C

mp

30-43 °C

mp

28-40 °C

mp

−14 °C

density

0.974 g/mL at 25 °C

density

0.97 g/mL at 25 °C

density

0.972 g/mL at 25 °C

density

1 g/mL at 25 °C

vapor pressure

<0.01 mmHg ( 25 °C)

vapor pressure

<0.01 mmHg ( 25 °C), <1 mmHg ( 20 °C)

vapor pressure

<0.01 mmHg ( 25 °C), <1 mmHg ( 20 °C)

vapor pressure

<0.01 mmHg ( 25 °C), <1 mmHg ( 20 °C)

mol wt

average Mn ~1,000

mol wt

average Mn ~2,900

mol wt

average Mn ~2,000

mol wt

average Mn ~250

contains

0.05-0.07% BHT as stabilizer

contains

-

contains

BHT as stabilizer

contains

-

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

-

Application

L-tryptophan has been used for the isolation of bone marrow–derived neutrophils.[1] 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.[2]

Biochem/physiol Actions

Tryptophan (Trp) is a heterocyclic, essential amino acid associated with growth, reproduction and immunity.[3][4][5] 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.[6]

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

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Synthesis and studies of 6, 6′ -BINAP derivatives for the heterogeneous asymmetric hydrogenation of methyl acetoacetate.
Saluzzo C, et al.
Tetrahedron Asymmetry, 13(11), 1141-1146 (2002)
Synergism between microwave and enzyme catalysis in intensification of reactions and selectivities: transesterification of methyl acetoacetate with alcohols.
Yadav GD and Lathi PS
J. Mol. Catal. A: Chem., 223(1-2), 51-56 (2004)
Enantioselective hydrogenation of methyl acetoacetate catalyzed by nickel supported on activated carbon or graphite.
Wolfson A, et al.
Applied Catalysis A: General, 208(1-2), 91-98 (2001)
Zinc mediated transesterification of ?-ketoesters and coumarin synthesis.
Chavan SP, et al.
Tetrahedron Letters, 43(47), 8583-8586 (2002)
Karl Sörelius et al.
Circulation, 130(24), 2136-2142 (2014-11-08)
Mycotic aortic aneurysm (MAA) is a rare and life-threatening disease. The aim of this European multicenter collaboration was to study the durability of endovascular aortic repair (EVAR) of MAA, by assessing late infection-related complications and long-term survival. All EVAR treated

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