| —— | 2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)acetaldehyde | 727723-06-0 | C19H30O3 | 306.445 | 
                                                                                                                                            
                                        | —— | (E)-2-Acetyl-4-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylene-decahydro-naphtho[2,1-d][1,3]dioxin-7-yl)-but-2-enoic acid ethyl ester | 727723-23-1 | C25H38O5 | 418.574 | 
                                                                                                                                            
                                        | —— | 3-[2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-Tetramethyl-8-methylene-decahydro-naphtho[2,1-d][1,3]dioxin-7-yl)-eth-(E)-ylidene]-3H-furan-2-one | 727723-05-9 | C23H32O4 | 372.505 | 
                                                                                                                                            
                                        | —— | 3,18-O-isopropylideneandrographolide | 372939-35-0 | C23H34O5 | 390.52 | 
                                                                                                                                            
                                        | —— | 14-O-acetyl-3,18-O-isopropylideneandrographolide | 372939-36-1 | C25H36O6 | 432.557 |