Protocatechuic acid
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Protocatechuic acid (PCA) is a dihydroxybenzoic acid, a type of phenolic acid. It is a major metabolite of antioxidant polyphenols found in green tea. It has mixed effects on normal and cancer cells in in vitro and in vivo studies.[4]
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
3,4-Dihydroxybenzoic acid | |
Other names
3,4-Dihydroxybenzoic acid PCA Protocatechuate | |
Identifiers | |
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3D model (JSmol) |
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3DMet | |
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DrugBank |
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ECHA InfoCard | 100.002.509 |
EC Number |
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CompTox Dashboard (EPA) |
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Properties | |
C7H6O4 | |
Molar mass | 154.12 g/mol |
Appearance | light brown solid |
Density | 1.524 g/cm3 (4 °C)[1] |
Melting point | 202 °C (396 °F; 475 K)[1] |
18 g/L (14 °C) 271 g/L (80 °C)[2] | |
Solubility | soluble in ethanol, ether insoluble in benzene |
Acidity (pKa) | 4.48, 8.83, 12.6[3] |
Hazards | |
NFPA 704 (fire diamond) | |
Safety data sheet (SDS) | MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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