Atractylodes

Atractylodes

Atractylodin

【Structural formula】

[Molecular formula and molecular weight] C ₁₃ H ₁₀ O; 182.

[Source] The dry rhizome of Atractylodes lancea (Thunb.

【Properties】Pale yellow prismatic crystals

This product is soluble in methanol

Melting point: 54°C

【Purity Check】

TLC

1.

Eluent petroleum ether - acetone (9: 2)

Check under UV light at 254nm before color development, and check under sunlight after heating 10% sulfuric acid ethanol to 105℃ for color development

2.

Eluent petroleum ether - ethyl acetate (8:2)

Check the UV light at 254nm before color development, and check the high performance liquid chromatography under sunlight after heating 10% sulfuric acid ethanol to 105℃ for color development.

Chromatographic column Agilent SB C ₁₈ , 10um (4.

The mobile phase methanol - water (71:29), 1ml / min

Detection wavelength 340nm

Differential calorimetry

Start temperature 30℃, end temperature 100℃, heating rate 5℃/min

【Structural identification】258,272,336,354

3135 (C-H), 2193 (C≡C), 2120 (C≡C), 1616, 1550, 1015, 947, 940, 882

EI-MS m/z: 182[M] ⁺

¹ H-NMR (CDCl ₃ ) δ: 7.

¹³ C-NMR (CDCl ₃ ) δ: 130.

【Storage】Dry and airtight

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