Momordicin-28

Momordicin-28 or 13-hydroxy-28-methoxy-urs-11-en-3-one is a triterpene compound with formula C
₃₁H
₅₀O
₃ found in the fresh fruit of the bitter melon (Momordica charantia).[1]

Momordicin-28

Names
IUPAC name (4aR,6aR,6bS,8aS,11R,12S,12aR,12bS,14aR,14bS)-12b-Hydroxy-8a-(methoxymethyl)-4,4,6a,6b,11,12,14b-heptamethyl-1,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,14a,14b-octadecahydropicen-3(2H)-one
Other names 13-Hydroxy-28-methoxy-urs-11-en-3-one
Identifiers
CAS Number	1392-51-4 Y[PubChem]
3D model (JSmol)	Interactive image
ChemSpider	57566599
PubChem CID	57518366
CompTox Dashboard (EPA)	DTXSID40727002
InChI InChI=1S/C31H50O3/c1-20-9-15-30(19-34-8)18-17-29(7)28(6)14-10-22-26(3,4)24(32)12-13-27(22,5)23(28)11-16-31(29,33)25(30)21(20)2/h11,16,20-23,25,33H,9-10,12-15,17-19H2,1-8H3/t20-,21+,22+,23-,25-,27+,28-,29+,30-,31+/m1/s1 Key: SQYPHCMLIZHTPW-LWIDLGQCSA-N
SMILES C[C@H]1[C@H](C)CC[C@]2(COC)CC[C@@]3(C)[C@]4(C)CC[C@@]5([H])C(C)(C)C(CC[C@]5(C)[C@@]4([H])C=C[C@]3(O)[C@@]21[H])=O
Properties
Chemical formula	C31H50O3
Molar mass	470.738 g·mol−1
Melting point	121 to 122 °C (250 to 252 °F; 394 to 395 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

The compound is soluble in ethyl acetate and chloroform but not in petrol. It crystallizes as fine needles that melt at 121−122 °C. It was isolated in 1997 by S. Begum and others.[1]