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T9753

D-Tryptophan

≥98.0% (HPLC)

Synonym(s):

(R)-2-Amino-3-(3-indolyl)propionic acid, D-α-Amino-3-indolepropionic acid

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1 g

Available to ship onApril 07, 2026fromMILWAUKEE

$25.70
5 g

Available to ship onApril 07, 2026fromMILWAUKEE

$65.40
25 g

Available to ship onApril 07, 2026fromMILWAUKEE

$263.00
100 g

Available to ship onApril 07, 2026fromMILWAUKEE

$691.00
$518.25

About This Item

Empirical Formula (Hill Notation):
C11H12N2O2
CAS Number:
153-94-6
Molecular Weight:
204.23
NACRES:
NA.32
PubChem Substance ID:
24900598
UNSPSC Code:
12352103
EC Number:
205-819-9
MDL number:
MFCD00005647
Beilstein/REAXYS Number:
86198

$25.70

Available to ship onApril 07, 2026Details

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Product Name

D-Tryptophan, ≥98.0% (HPLC)

biological source

synthetic (organic)

assay

≥98.0% (HPLC)

form

powder

technique(s)

cell culture | embryo: suitable, cell culture | mammalian: suitable

color

white to off-white

mp

282-285 °C (dec.) (lit.)

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-/m1/s1

InChI key

QIVBCDIJIAJPQS-SECBINFHSA-N

Gene Information

human ... GRINA(2907)
mouse ... GRINA(66168)
rat ... GRINA(266668)

General description

Tryptophan is one of the essential and standard amino acids present in the body. It is used by the cells to produce proteins.

Application

D-Tryptophan can be used for Human embryonic kidney cell (HEK-293, ATCC: CRL-1573) culture.[1]The product is a sweetener used to study the release of incretins from enteroendocrine cells triggered by sugar but not by sweeteners.[2]
D-Tryptophan has been used to study its efficacy on dispersing biofilm in dental unit waterlines (DUWLs) in vitro.

Biochem/physiol Actions

Low level of D-tryptophan is capable of preventing the growth of an L-tryptophan-requiring mutant of the E. coli.

Other Notes

Unnatural isomer of tryptophan.

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This Item
T3300T8941162698
D-Tryptophan ≥98.0% (HPLC)

Sigma-Aldrich

T9753

D-Tryptophan

DL-Tryptophan ≥99% (HPLC)

Sigma-Aldrich

T3300

DL-Tryptophan

L-Tryptophan from non-animal source, meets EP, JP, USP testing specifications, suitable for cell culture, 99.0-101.0%

Sigma-Aldrich

T8941

L-Tryptophan

DL-Tryptophan ≥99% (HPLC)

Sigma-Aldrich

162698

DL-Tryptophan

form

powder

form

powder

form

powder

form

powder

technique(s)

cell culture | embryo: suitable, cell culture | mammalian: suitable

technique(s)

-

technique(s)

cell culture | mammalian: suitable

technique(s)

-

assay

≥98.0% (HPLC)

assay

≥99% (HPLC)

assay

99.0-101.0%

assay

≥99% (HPLC)

color

white to off-white

color

white to off-white

color

white to yellow

color

-

mp

282-285 °C (dec.) (lit.)

mp

289-290 °C (dec.) (lit.)

mp

280-285 °C (dec.) (lit.)

mp

289-290 °C (dec.) (lit.)

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

200

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW0243
MKCT7977
MKCT0095
MKCS3587
MKCR3947

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Related Content

Application of D-Amino Acids as Biofilm Dispersing Agent in Dental Unit Waterlines
Ampornaramveth RS, et al.
International journal of dentistry, 2018(4954) (2018)
C F Morris et al.
Plant physiology, 88(2), 435-440 (1988-10-01)
An endogenous germination inhibitor(s) in wheat (Triticum aestivum L.) grain has been implicated in seed dormancy and germination, but its identity and mode of action have not been elucidated. We isolated and identified an endogenous germination inhibitor in white wheat
Fangjie Zheng et al.
Electrophoresis, 40(16-17), 2218-2226 (2019-04-27)
Establishing a simple and accurate method for Hg2+ detection is of great importance for the environment and human health. In this work, platinum nanoparticles (Pt NPs) with different capped agents and morphologies were synthesized. It was found that Pt NPs
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Global Trade Item Number

SKUGTIN
T9753-5G04061837390456
T9753-25G04061837390449
T9753-1G04061826214619
T9753-100MG04061832277080
T9753-100G04061837390432

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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