Crocetin-I

Crocetin-I

Crocin-I

[Synonyms] Crocetin , Crocetin , Crocetin , Crocetin, Di-gentiobiose ester of cro-cetin, α-Crocin

【Structural formula】

[Molecular formula and molecular weight] C ₄₄ H ₆₄ O ₂₄ ; 976.

[Source] The dried stigma of Crocus sativus L.

【Properties】Dark red powdery crystals

This product is easily soluble in hot water, slightly soluble in absolute ethanol , ether and other organic solvents

Melting point: 174～177℃

【Purity Check】

TLC

1.

Developing solvent ethyl acetate - methanol - water (50:10:7)

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2.

Developing solvent of acetone - methanol - water (8: 0.

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High performance liquid chromatography

Chromatographic column Agilent C ₁₈ , 5um (4.

Mobile phase methanol-water (45:55), 1.

Detection 440nm

【Structural identification】459,433

3315, 2883, 1699, 1576, 1612, 1470, 1225, 1065, 970

HR-FAB-MS m/z: 977.

¹ H-NMR (DMSO) δ: 7.

¹³ C-NMR (DMSO) δ: 166.

【Storage】Dry and airtight
.