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Imperatorin

 Last Update: 2022-06-04
 Source: Internet
 Author: User

Tags

thermochromic liquid crystals

2 3 pentanedione

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Imperatorin

[Synonyms] Parsley belongs to element B, prehulide, Angelica B, Wang Cao Su, Ammidin, Marmelosin

【Structural formula】

[Molecular formula and molecular weight] C ₁₆ H ₁₄ O ₄ ; 270.

[Source] The dried root of Peucedanum praeruptorum Dunn, a plant of the Umbelliferae family

[Properties] Colorless granular crystals

This product is easily soluble in chloroform , soluble in benzene, ethanol , ether and caustic solution, but insoluble in cold water

【Purity Check】

TLC

Developing solvent n-hexane - ethyl acetate (7:3)

Inspection under 365nm fluorescent light

Developing agent benzene-ethyl acetate-(glacial acetic acid) (9:0.

Inspection under 365nm fluorescent light

High performance liquid chromatography

Chromatographic column C ₁₈ , 10um (4.

Mobile phase acetonitrile-water (60:40), 1.

Detection wavelength 303nm

[Structural identification] 302, 264, 249, 219, 201

1725, 1715, 1630, 1595, 880

ESI-MS m/z: 271 [M+H] ⁺

¹ H-NMR (CDCl ₃ ) δ: 6.

¹³ C-NMR (CDCl ₃ ) δ: 160.

【Storage】Dry and airtight

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