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Deoxycholic acid
Deoxycholic Acid
【Structural formula】
【Molecular formula and molecular weight】C 24 H 40 O 4 ;392.
【Source】Dry gallstones of Bovine Bostaurus domesticus Gmelin
【Properties】White powder
This product is soluble in methanol but almost insoluble in ether
Melting point: 193~198℃
Optical rotation: [α]D 20 55°(C1, ethanol )
【Purity Check】
TLC
1.
Developing solvent of chloroform - ether - acetic acid (2 2: 1)
Check 30% sulfuric acid ethanol solution, bake at 105℃ for 10min, check under sunlight and ultraviolet light (365nm)
2.
Developing agent isooctane-isoamyl ether- glacial acetic acid -n-butanol-water (10:5:5:3:1)
Check 30% sulfuric acid ethanol solution, bake at 105℃ for 10min, check under sunlight and ultraviolet light (365nm)
Differential calorimetry
Start temperature 50℃, end temperature 300℃, heating rate 5℃/min
【Structural identification】227,200
3350(-OH), 2950, 1700(C=O), 1050
EI-MS m/z: 375[M-OH] + , 357, 255, 217, 203
1 H-NMR (CD 3 OD) δ: 0.
13 C-NMR (CD 3 OD) δ: 36.
【Storage】Dry and airtight