Calycin

3-(3-hydroxy-5-oxo-4-phenyl-2,5-dihydrofuran-2-ylidene)-2,3-dihydro-1-benzofuran-2-one

C18H10O5 (306.0528)


   

Vulgarol

2,5-dihydroxy-3,6-diphenylcyclohexa-2,5-diene-1,4-dione

C18H12O4 (292.0736)


Vulgarol, also known as 2,5-dihydroxy-3,6-diphenyl-1,4-benzoquinone, is a member of the class of compounds known as P-benzoquinones. P-benzoquinones are benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively. Vulgarol is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Vulgarol can be found in mugwort, which makes vulgarol a potential biomarker for the consumption of this food product.

   

Polyporic acid

Polyporic acid

C18H12O4 (292.0736)


   
   

3-[(2e)-5-hydroxy-3-oxo-4-phenylfuran-2-ylidene]-1-benzofuran-2-one

3-[(2e)-5-hydroxy-3-oxo-4-phenylfuran-2-ylidene]-1-benzofuran-2-one

C18H10O5 (306.0528)


   

3-[(2z)-3-hydroxy-5-oxo-4-phenylfuran-2-ylidene]-1-benzofuran-2-one

3-[(2z)-3-hydroxy-5-oxo-4-phenylfuran-2-ylidene]-1-benzofuran-2-one

C18H10O5 (306.0528)


   

[(2e,4r)-3,5-dioxo-4-phenyloxolan-2-ylidene](phenyl)acetic acid

[(2e,4r)-3,5-dioxo-4-phenyloxolan-2-ylidene](phenyl)acetic acid

C18H12O5 (308.0685)


   

(1s)-1,5,8,10-tetrahydroxy-7-methoxy-3-methyl-1h-cyclohexa[g]isochromene-6,9-dione

(1s)-1,5,8,10-tetrahydroxy-7-methoxy-3-methyl-1h-cyclohexa[g]isochromene-6,9-dione

C15H12O8 (320.0532)


   

5-(2-oxo-1-benzofuran-3-ylidene)-3-phenyloxolane-2,4-dione

5-(2-oxo-1-benzofuran-3-ylidene)-3-phenyloxolane-2,4-dione

C18H10O5 (306.0528)


   

1,5,8,10-tetrahydroxy-7-methoxy-3-methyl-1h-cyclohexa[g]isochromene-6,9-dione

1,5,8,10-tetrahydroxy-7-methoxy-3-methyl-1h-cyclohexa[g]isochromene-6,9-dione

C15H12O8 (320.0532)


   

(3,5-dioxo-4-phenyloxolan-2-ylidene)(phenyl)acetic acid

(3,5-dioxo-4-phenyloxolan-2-ylidene)(phenyl)acetic acid

C18H12O5 (308.0685)


   

(3r)-5-[(3e)-2-oxo-1-benzofuran-3-ylidene]-3-phenyloxolane-2,4-dione

(3r)-5-[(3e)-2-oxo-1-benzofuran-3-ylidene]-3-phenyloxolane-2,4-dione

C18H10O5 (306.0528)


   

diphenylfuro[3,2-b]furan-2,5-dione

diphenylfuro[3,2-b]furan-2,5-dione

C18H10O4 (290.0579)