3-Hydroxyanthranilic acid
Names | |
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Preferred IUPAC name
2-Amino-3-hydroxybenzoic acid | |
Identifiers | |
3D model (
JSmol ) |
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ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard
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100.008.148 |
KEGG | |
MeSH | 3-Hydroxyanthranilic+Acid |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C7H7NO3 | |
Molar mass | 153.137 g·mol−1 |
Appearance | powder |
Density | ≈ 1 g/cm3 |
Melting point | 240–265 °C (464–509 °F; 513–538 K)[3] decomposes 227 °C (441 °F; 500 K)[2] from dilute HCl, decomposes |
low[1] | |
Solubility | soluble in ether, CHCl3, alcohols[1] |
Solubility in hydrochloric acid | 1 N:[1] 1 g/100 ml |
Acidity (pKa) | at 20 °C:[2] 1 = 2.7, 2 = 5.19, 3 = 10.12 |
UV-vis (λmax) | 298 nm[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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3-Hydroxyanthranilic acid is an
metabolism of tryptophan. It is new antioxidant isolated from methanol extract of tempeh. It is effective in preventing autoxidation of soybean oil and powder, while antioxidant 6,7,4'-trihydroxyisoflavone is not.[4]
References
- ^ a b c "3-Hydroxyanthranilic acid". Santa Cruz Biotechnology, Inc. Retrieved 2015-09-24.
- ^ ISBN 978-1-85617-567-8.
- PMID 13654282. Retrieved 2015-09-24.
- .
External links
- HAA concentration graph in lyophilized tempeh powder extract (in Indonesian)