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
T0254
L-Tryptophan
≥98% (HPLC)
Synonym(s):
(S)-2-Amino-3-(3-indolyl)propionic acid, L-α-Amino-3-indolepropionic acid
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
1 g | Available to ship TODAY | $35.90 |
5 g | Available to ship TODAY | $35.90 |
25 g | Available to ship TODAY | $59.10 |
100 g | Available to ship TODAY | $181.00 |
500 g | Available to ship TODAY | $711.00 |
1 kg | Available to ship TODAY | $1,070.00 |
About This Item
$35.90
Available to ship TODAYDetails
Product Name
L-Tryptophan, reagent grade, ≥98% (HPLC)
grade
reagent grade
Quality Segment
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
human ... TDO2(6999), TPH1(7166), TPH2(121278)
Application
Biochem/physiol Actions
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| description reagent grade, ≥98% (HPLC) | description United States Pharmacopeia (USP) Reference Standard | description BioUltra, ≥99.5% (NT) | description from non-animal source, meets EP, JP, USP testing specifications, suitable for cell culture, 99.0-101.0% |
| grade reagent grade | grade pharmaceutical primary standard | grade - | grade - |
| form powder | form - | form powder or crystals | form powder |
| assay ≥98% (HPLC) | assay - | assay ≥99.5% (NT) | assay 99.0-101.0% |
| color white to off-white | color - | color white | color white to yellow |
| mp 280-285 °C (dec.) (lit.) | mp 280-285 °C (dec.) (lit.) | mp 280-285 °C (dec.) (lit.) | mp 280-285 °C (dec.) (lit.) |
| solubility 0.5 M HCl: 50 mg/mL | solubility - | solubility 0.5 M HCl: 0.1 g/mL at 20 °C, clear, colorless to faintly yellow | solubility 1 M HCl: 10 mg/mL |
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Storage Class
11 - Combustible Solids
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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