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Salicylic acid
Salicylicacid
【Molecular formula and molecular weight】C 7 H 6 O 3 ;138.
【Structural formula】
【Source】Organic Synthesis
【Properties】White crystalline powder
This product is soluble in water, easily soluble in ethanol , ether and chloroform
Melting point: 157~159℃
【Purity Check】
TLC
1.
Developing agent cyclohexane- ethyl acetate -formic acid (10:1:1)
After checking the color development of 1% ferric chloride ethanol solution, check under sunlight
2.
Developing agent benzene-acetic acid-methanol (30:1:3)
After checking the color development of 1% ferric chloride ethanol solution, check under sunlight
High performance liquid chromatography
Chromatographic column ZORBAX Eclipse XDB-C 18 column, 5um (4.
The mobile phase methanol - water (78:22) [containing cetyl trimethyl ammonium bromide (HDTA) 0.
Detection wavelength 280nm
[Structural identification] 297, 232, 209
3250 (-OH), 2550, 1670 (-C=O), 1610, 1490 (aromatic ring), 1450, 1300, 1250, 1210, 1160, 1030, 890, 760
EI-MS m/z: 138[M] +
1 H-NMR (CDCl 3 ) δ: 6.
13 C-NMR(CDCl 3 ) δ: 111.
【Storage】Dry and airtight
Related links: 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside