Ursodeoxycholic acid

Ursodeoxycholic acid

Ursodeoxycholic Acid

【Structural formula】

【Molecular formula and molecular weight】C ₂₄ H ₄₀ O ₄ ;392.

[Source] Ursus black bear Selenarctos thibetanus Cuvier or brown bear Ursus arctos L.

【Properties】White powder

This product is easily soluble in methanol and ethanol

Melting point: 202～203℃

【Purity Check】

TLC

1.

Developing agent isooctane- ethyl acetate - glacial acetic acid (15:7:5)

Check 10% sulfuric acid ethanol solution, bake at 105℃ until the spots are clear, observe under sunlight and ultraviolet light (365nm)

2.

Developing solvent isooctane - isoamyl ether - acetic acid - n-butanol - water (10:5: 5: 3: 1) upper liquid

Check the 10% sulfuric acid ethanol solution, bake at 105℃ until the spots are clear, observe the differential calorimetry scanning method under sunlight and ultraviolet light (365nm)

Start temperature 50℃, end temperature 300℃, heating rate 5℃/min

[Structural identification] 224,200

3520(-OH), 2940, 1720, 1455, 1060, 900

EI-MS m/z: 393[M+H] ⁺ , 375, 357, 342, 255, 232

¹ H-NMR (CD ₃ OD) δ: 0.

¹³ C-NMR (CD ₃ OD) δ: 36.

【Storage】Dry and airtight

Related link: Ginsenoside Re