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
H1771
3-Hydroxy-DL-kynurenine
Synonym(s):
α,2-Diamino-3-hydroxy-γ-oxobenzenebutanoic acid
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About This Item
assay
≥98% (TLC)
Quality Segment
form
powder
solubility
1 M HCl: 49.00-51.00 mg/mL, clear to very slightly hazy
storage temp.
2-8°C
SMILES string
NC(CC(=O)c1cccc(O)c1N)C(O)=O
InChI
1S/C10H12N2O4/c11-6(10(15)16)4-8(14)5-2-1-3-7(13)9(5)12/h1-3,6,13H,4,11-12H2,(H,15,16)
InChI key
VCKPUUFAIGNJHC-UHFFFAOYSA-N
General description
Application
- as a substrate for the recombinant human kynureninase assay
- as a reference standard in tandem mass spectrometry (MS/MS) analysis
- as a control for quantifying serum 3-Hydroxy-DL-kynurenine levels in diabetic retinopathy patients[2]
Biochem/physiol Actions
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥98% (TLC) | assay ≥90.0% (HPLC) | assay - | assay ≥95.0% (NT) |
| solubility 1 M HCl: 49.00-51.00 mg/mL, clear to very slightly hazy | solubility - | solubility - | solubility - |
| Quality Level 200 | Quality Level - | Quality Level 200 | Quality Level 100 |
| form powder | form powder | form - | form powder |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. - |
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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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