This product may be stored for several days at 4 °C. The product has not been evaluated for long term freezer storage. However, other sources note that stock solutions of kynurenic acid at 100 mM, initially prepared with 5 M NaOH and subsequently diluted with saline and the pH adjusted with 2 N HCl, may be stored at -20 °C. This information has not been validated. Please see the link below to review the product datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/231/908/k3375pis.pdf
K3375
Kynurenic acid
≥98% (HPLC), powder, NMDA receptor antagonist
Kynurenic acid
Synonym(s):
4-Hydroxyquinoline-2-carboxylic acid
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About This Item
Empirical Formula (Hill Notation):
C10H7NO3
CAS Number:
Molecular Weight:
189.17
NACRES:
NA.77
PubChem Substance ID:
UNSPSC Code:
12352106
EC Number:
207-751-5
MDL number:
Beilstein/REAXYS Number:
147451
Assay:
≥98%
Form:
powder
Pricing and availability is not currently available.
Product Name
Kynurenic acid, ≥98%
Quality Segment
assay
≥98%
form
powder
mp
275 °C (dec.) (lit.)
SMILES string
OC(=O)c1cc(O)c2ccccc2n1
InChI
1S/C10H7NO3/c12-9-5-8(10(13)14)11-7-4-2-1-3-6(7)9/h1-5H,(H,11,12)(H,13,14)
InChI key
HCZHHEIFKROPDY-UHFFFAOYSA-N
Gene Information
human ... CHRNA1(1134), CHRNA10(57053), CHRNA2(1135), CHRNA3(1136), CHRNA4(1137), CHRNA5(1138), CHRNA6(8973), CHRNA7(1139), CHRNA9(55584), CHRNB1(1140), CHRNB2(1141), CHRNB3(1142), CHRNB4(1143), GRIA3(2892), GRIA4(2893), GRIK1(2897), GRIK2(2898), GRIK3(2899), GRIK4(2900), GRIK5(2901), GUCA2A(2980), GUCA2B(2981), NGFR(4804), SLC23A2(9962)
rat ... Gria1(50592), Grik1(29559), Grin2a(24409)
Application
Kynurenic acid has been used as a constituent in dissection saline solution for embryonic cerebral cortical cells and human primary astrocytes. It has also been used as a medium supplement for murine intestinal epithelial cell line, MODE-K and induced pluripotent stem cell (iPSC)-derived neurons cells.
Biochem/physiol Actions
Kynurenic acid (KynA) is a non-selective antagonist of N-methyl-d-aspartate (NMDA), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and kainate receptors. It blocks kainic acid neurotoxicity. Kynurenic acid also blocks nicotinic acetylcholine receptors. It is a by-product of tryptophan catabolic pathway. Kynurenic acid is a neuromodulator and controls the levels of glutamate, dopamine, acetylcholine and α-aminobutyric acid (GABA). KynA controls neuroendocrine functions and altered levels of KynA is a potential marker in depression, schizophrenia Alzheimer′s and Huntington′s diseases.[1] Normal levels of KynA in the brain is crucial for the cognitive function.[2]
Features and Benefits
This compound is a featured product for Neuroscience research. Click here to discover more featured Neuroscience products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.
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This Item | |||
|---|---|---|---|
| assay ≥98% | assay ≥98% (HPLC) | assay ≥98% (HPLC) | assay ≥98% (HPLC) |
| form powder | form powder | form powder | form powder |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| mp 275 °C (dec.) (lit.) | mp - | mp - | mp - |
| Gene Information human ... CHRNA1(1134), CHRNA10(57053), CHRNA2(1135), CHRNA3(1136), CHRNA4(1137), CHRNA5(1138), CHRNA6(8973), CHRNA7(1139), CHRNA9(55584), CHRNB1(1140), CHRNB2(1141), CHRNB3(1142), CHRNB4(1143), GRIA3(2892), GRIA4(2893), GRIK1(2897), GRIK2(2898), GRIK3(2899), GRIK4(2900), GRIK5(2901), GUCA2A(2980), GUCA2B(2981), NGFR(4804), SLC23A2(9962) | Gene Information - | Gene Information - | Gene Information - |
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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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