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Vanillic acid

 Last Update: 2022-06-06
 Source: Internet
 Author: User

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93 sulfuric acid

1 5 whiskey

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Vanillic acid

[Synonym] 4-Hydroxy-3-methoxybenzoic acid, 4-Hydroxy-3-methoxybenzoic acid

【Structural formula】

【Molecular formula and molecular weight】C ₈ H ₈ O ₄ ;168.

[Source] Scrophulariaceae plant Picrorhiza scrophularii flora.

【Properties】White crystals

This product is easily soluble in methanol and acetone

【Purity Check】

TLC

Developing solvent hexane - ether - acetic acid (5: 5: 0.

Check under UV lamp (254nm)

Developing agent toluene- ethyl acetate - glacial acetic acid (8:4:0.

After checking the color development of 10% sulfuric acid ethanol solution, check under visible light

High performance liquid chromatography

Column HypersilC ₁₈ , 5um (4.

Mobile phase Methanol 0.

Detection wavelength 260nm

【Structural identification】290,259,217,205

3485 (-OH), 1682 (C=O), 1597, 1523, 1433, 1203, 1111, 1028, 918, 881, 766

MS m/z: 168[M] ⁺ , 153, 151, 125, 108, 97

¹ H-NMR (DMSO) δ: 12.

¹³ C-NMR (DMSO) δ: 121.

【Storage】Dry and airtight
.

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