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Monocrotaline
Monocrotaline
【Structural formula】
[Molecular formula and molecular weight] C 16 H 23 NO 6 ; 325.
[Source] The seeds of Crotalaria assamica Benth.
【Properties】White prismatic crystals
This product is easily soluble in chloroform, soluble in absolute ethanol and methanol , slightly soluble in ether and acetone , and slightly soluble in benzene and water
Optical rotation: [α]—57.
【Purity Check】
TLC
1.
Developing agent chloroform- acetone - methanol -ammonia (3:1:0.
Detectable element bismuth potassium iodide after the reagent color, daylight viewing
2.
Developing agent chloroform- ethyl acetate -methanol-ammonia (3:1:1:0.
Detectable element bismuth potassium iodide after the reagent color, daylight viewing
High performance liquid chromatography
Column Waters AcQuity UPLC HSS T 3 , 1.
The mobile phase of methanol (containing 0.
Detection wavelength 214nm
[Structural identification] 202,216
3499 (-OH), 3069, 2996, 2974, 2853, 2732, 1735 (C=O), 1459, 1385, 1302, 1224, 1184, 1154, 1110, 1064, 822, 695, 606
ESI-MS m/z: 326 [M+H] +
1 H-NMR (DMSO) δ: 6.
13 C-NMR (DMSO) δ: 133.
2(C-1), 134.
9(C-2), 52.
9(C-3), 60.
8(C-5), 32.
5(C-6), 74.
1(C-7) , 76.
7(C-8), 58.
4(C-9), 173.
8(C-10), 78.
3(C-11), 75.
2(C-12), 41.
9(C-13), 174.
6(C-14), 22.
0(C-15), 17.
6(C-16), 13.
8(C-17)
.
【Storage】Dry and airtight
.