Exact Mass: 552.1422412
Exact Mass Matches: 552.1422412
Found 56 metabolites which its exact mass value is equals to given mass value 552.1422412,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
7-Hydroxy-3-methoxy-1-primeverosyloxyxanthone
7-hydroxy-3-methoxy-1-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]-9H-xanthen-9-one
7-Hydroxy-3-methoxy-1-primeverosyloxyxanthone is found in alcoholic beverages. 7-Hydroxy-3-methoxy-1-primeverosyloxyxanthone is a constituent of Gentiana lutea (yellow gentian). Constituent of Gentiana lutea (yellow gentian). 7-Hydroxy-3-methoxy-1-primeverosyloxyxanthone is found in alcoholic beverages, herbs and spices, and root vegetables.
Gentioside
1-hydroxy-7-methoxy-3-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-({[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}-9H-xanthen-9-one
Gentioside is found in alcoholic beverages. Gentioside is also a constituent of Gentiana lutea roots (yellow gentian) (PMID: 26726749).
1-Hydroxy-3-methoxy-7-primeverosyloxyxanthone
1-hydroxy-3-methoxy-7-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-({[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}-9H-xanthen-9-one
1-Hydroxy-3-methoxy-7-primeverosyloxyxanthone is found in alcoholic beverages. 1-Hydroxy-3-methoxy-7-primeverosyloxyxanthone is a constituent of Gentiana lutea (yellow gentian)
3',5,6-Trihydroxy-3,4',7,8-tetramethoxyflavone 3-glucoside
7-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-5,6,8-trimethoxy-3-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-4-one
3,5,6-Trihydroxy-3,4,7,8-tetramethoxyflavone 3-glucoside is found in citrus. 3,5,6-Trihydroxy-3,4,7,8-tetramethoxyflavone 3-glucoside is a constituent of Citrus species. Constituent of Citrus subspecies 3,5,6-Trihydroxy-3,4,7,8-tetramethoxyflavone 3-glucoside is found in citrus.
6-Hydroxymyricetin 3,6,3,5-tetramethyl ether 7-glucoside
6-Hydroxymyricetin 3,6,3,5-tetramethyl ether 7-glucoside
5,2,5-Trihydroxy-3,6,7,4-tetramethoxyflavone 5-glucoside
5,2,5-Trihydroxy-3,6,7,4-tetramethoxyflavone 5-glucoside
Clitoriacetal 11-O-glucoside
(6R,6aS,12aR)-6,11,12a-Trihydroxy-2,3,9-trimethoxyrotenone 11-O-glucoside
2-O-[alpha-L-rhamnopyranosyl-(1->2)-beta-D-xylopyranosyl]-1,8-dihydroxy-6-methoxyxanthone|7-O-[alpha-L-rhamnopyranosyl-(1?2)-beta-D-xylopyranosyl]-1,8-dihydroxy-3-methoxyxanthone
2-O-[alpha-L-rhamnopyranosyl-(1->2)-beta-D-xylopyranosyl]-1,8-dihydroxy-6-methoxyxanthone|7-O-[alpha-L-rhamnopyranosyl-(1?2)-beta-D-xylopyranosyl]-1,8-dihydroxy-3-methoxyxanthone
1,7-dihydroxy-3,8-dimethoxyxanthone 1-O-[beta-D-xylopyranosyl-(1->4)-beta-D-xylopyranoside]
1,7-dihydroxy-3,8-dimethoxyxanthone 1-O-[beta-D-xylopyranosyl-(1->4)-beta-D-xylopyranoside]
6-O-[(6-O-allophanyl)-beta-D-glucopyranosyl]-2,5-dihydroxy-7-phenyl-phenalen-1-one|6-O-[(6-O-allophanyl)-beta-D-glucopyranosyl]-2,5-dihydroxy-7-phenylphenalen-1-one
6-O-[(6-O-allophanyl)-beta-D-glucopyranosyl]-2,5-dihydroxy-7-phenyl-phenalen-1-one|6-O-[(6-O-allophanyl)-beta-D-glucopyranosyl]-2,5-dihydroxy-7-phenylphenalen-1-one
4-O-alpha-L-rhamnopyranosyl-(1->2)-beta-D-xylopyranosyl-1,4,5-trihydroxy-7-methoxyxanthone|pseudonolin
4-O-alpha-L-rhamnopyranosyl-(1->2)-beta-D-xylopyranosyl-1,4,5-trihydroxy-7-methoxyxanthone|pseudonolin
2-hydroxy 3,6,7,4-tetramethylquercetagetin 3-O-beta-D-glucoside
2-hydroxy 3,6,7,4-tetramethylquercetagetin 3-O-beta-D-glucoside
(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid
NCGC00380551-01!(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid
(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid [IIN-based: Match]
NCGC00380551-01!(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid [IIN-based: Match]
1-Hydroxy-3-methoxy-7-primeverosyloxyxanthone
1-hydroxy-3-methoxy-7-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]-9H-xanthen-9-one
Gentiin
1-hydroxy-7-methoxy-3-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]-9H-xanthen-9-one
7-Hydroxy-3-methoxy-1-primeverosyloxyxanthone
7-hydroxy-3-methoxy-1-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]-9H-xanthen-9-one
3',5,6-Trihydroxy-3,4',7,8-tetramethoxyflavone 3-glucoside
7-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-5,6,8-trimethoxy-3-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-4-one
(S)-DIETHYL 2-(4-(3-CHLORO-4-FLUOROPHENYLAMINO)-7-(TETRAHYDROFURAN-3-YLOXY)QUINAZOLIN-6-YLAMINO)-2-OXOETHYLPHOSPHONATE
(S)-DIETHYL 2-(4-(3-CHLORO-4-FLUOROPHENYLAMINO)-7-(TETRAHYDROFURAN-3-YLOXY)QUINAZOLIN-6-YLAMINO)-2-OXOETHYLPHOSPHONATE
Talazoparib Tosylate
Talazoparib Tosylate
C26H22F2N6O4S (552.1391236000001)
C274 - Antineoplastic Agent > C163758 - Targeted Therapy Agent > C62554 - Poly (ADP-Ribose) Polymerase Inhibitor C471 - Enzyme Inhibitor
2-[4-[[4-[bis(2-hydroxyethyl)amino]-2-chlorophenyl]-(2-chlorophenyl)methyl]-3-chloro-N-(2-hydroxyethyl)anilino]ethanol
2-[4-[[4-[bis(2-hydroxyethyl)amino]-2-chlorophenyl]-(2-chlorophenyl)methyl]-3-chloro-N-(2-hydroxyethyl)anilino]ethanol
(2E)-3-ethyl-2-[(E)-3-(3-ethyl-4,5-diphenyl-1,3-thiazol-3-ium-2-yl)prop-2-enylidene]benzo[g][1,3]benzothiazole;chloride
(2E)-3-ethyl-2-[(E)-3-(3-ethyl-4,5-diphenyl-1,3-thiazol-3-ium-2-yl)prop-2-enylidene]benzo[g][1,3]benzothiazole;chloride
N1-butan-2-yl-N4-[2-(3,4-dimethoxyphenyl)ethyl]-N4-(thiophen-2-ylmethyl)benzene-1,4-disulfonamide
N1-butan-2-yl-N4-[2-(3,4-dimethoxyphenyl)ethyl]-N4-(thiophen-2-ylmethyl)benzene-1,4-disulfonamide
(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid
(5Z)-4-(carboxymethyl)-5-[2-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]oxyethylidene]-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid
3,5,6-Trihydroxy-3,4,7,8-tetramethoxyflavone 3-glucoside
3,5,6-Trihydroxy-3,4,7,8-tetramethoxyflavone 3-glucoside
8-{[(2s,3r,4s,5r)-4,5-dihydroxy-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,5-dihydroxy-3-methoxyxanthen-9-one
8-{[(2s,3r,4s,5r)-4,5-dihydroxy-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,5-dihydroxy-3-methoxyxanthen-9-one
1-hydroxy-3-methoxy-5-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]xanthen-9-one
1-hydroxy-3-methoxy-5-[(3,4,5-trihydroxy-6-{[(3,4,5-trihydroxyoxan-2-yl)oxy]methyl}oxan-2-yl)oxy]xanthen-9-one
2,5-dihydroxy-7-phenyl-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-{[hydroxy(c-hydroxycarbonimidoylimino)methoxy]methyl}oxan-2-yl]oxy}phenalen-1-one
2,5-dihydroxy-7-phenyl-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-{[hydroxy(c-hydroxycarbonimidoylimino)methoxy]methyl}oxan-2-yl]oxy}phenalen-1-one
2-o-[α-l-rhamnopyranosyl-(1→2)-β-d-xylopy-ranosyl]-1,8-dihydroxy-6-methoxyxanthone
NA
{"Ingredient_id": "HBIN006188","Ingredient_name": "2-o-[\u03b1-l-rhamnopyranosyl-(1\u21922)-\u03b2-d-xylopy-ranosyl]-1,8-dihydroxy-6-methoxyxanthone","Alias": "NA","Ingredient_formula": "C25H28O14","Ingredient_Smile": "CC1C(C(C(C(O1)OC2C(C(COC2OC3=C(C4=C(C=C3)OC5=CC(=CC(=C5C4=O)O)OC)O)O)O)O)O)O","Ingredient_weight": "NA","OB_score": "NA","CAS_id": "NA","SymMap_id": "NA","TCMID_id": "18721","TCMSP_id": "NA","TCM_ID_id": "NA","PubChem_id": "NA","DrugBank_id": "NA"}
7-hydroxy-3-methoxy-1-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
7-hydroxy-3-methoxy-1-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
1-hydroxy-3-methoxy-5-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
1-hydroxy-3-methoxy-5-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
6,12a-dihydroxy-2,3,9-trimethoxy-11-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6,6a-dihydro-5,7-dioxatetraphen-12-one
6,12a-dihydroxy-2,3,9-trimethoxy-11-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6,6a-dihydro-5,7-dioxatetraphen-12-one
(1r,18r,19r,31s)-7,19,23,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,22,24,26,28-decaene-5,12,21-trione
(1r,18r,19r,31s)-7,19,23,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,22,24,26,28-decaene-5,12,21-trione
1',4,5,8'-tetrahydroxy-2,3'-dimethoxy-6',7-dimethyl-9h-[1,2'-bianthracene]-9',10,10'-trione
1',4,5,8'-tetrahydroxy-2,3'-dimethoxy-6',7-dimethyl-9h-[1,2'-bianthracene]-9',10,10'-trione
3-{[(2r,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
3-{[(2r,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
(1s,4as,8r,8as)-1-{[(2s,3r,4s,5s,6r)-6-({[(2e)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}methyl)-3,4,5-trihydroxyoxan-2-yl]oxy}-8-methyl-6-oxo-1h,4ah,5h,8h,8ah-pyrano[3,4-c]pyran-4-carboxylic acid
(1s,4as,8r,8as)-1-{[(2s,3r,4s,5s,6r)-6-({[(2e)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}methyl)-3,4,5-trihydroxyoxan-2-yl]oxy}-8-methyl-6-oxo-1h,4ah,5h,8h,8ah-pyrano[3,4-c]pyran-4-carboxylic acid
8,23,28-trihydroxy-6,21-dimethyl-3,10,18,25-tetraoxooctacyclo[14.11.1.0²,¹¹.0²,¹⁵.0⁴,⁹.0¹³,¹⁷.0¹⁷,²⁶.0¹⁹,²⁴]octacosa-4,6,8,11,19,21,23,26-octaen-14-yl acetate
8,23,28-trihydroxy-6,21-dimethyl-3,10,18,25-tetraoxooctacyclo[14.11.1.0²,¹¹.0²,¹⁵.0⁴,⁹.0¹³,¹⁷.0¹⁷,²⁶.0¹⁹,²⁴]octacosa-4,6,8,11,19,21,23,26-octaen-14-yl acetate
8-({4,5-dihydroxy-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl}oxy)-1,5-dihydroxy-3-methoxyxanthen-9-one
8-({4,5-dihydroxy-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl}oxy)-1,5-dihydroxy-3-methoxyxanthen-9-one
(6r,6as,12ar)-6,12a-dihydroxy-2,3,9-trimethoxy-11-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6,6a-dihydro-5,7-dioxatetraphen-12-one
(6r,6as,12ar)-6,12a-dihydroxy-2,3,9-trimethoxy-11-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6,6a-dihydro-5,7-dioxatetraphen-12-one
5,7-dihydroxy-2-(4-hydroxyphenyl)-3-{[(3r,4s,5r,6r)-3,4,5-trihydroxy-6-[(1r,2s,3r,4r)-1,2,3,4-tetrahydroxypentyl]oxan-2-yl]oxy}chromen-4-one
5,7-dihydroxy-2-(4-hydroxyphenyl)-3-{[(3r,4s,5r,6r)-3,4,5-trihydroxy-6-[(1r,2s,3r,4r)-1,2,3,4-tetrahydroxypentyl]oxan-2-yl]oxy}chromen-4-one
3-{[4,5-dihydroxy-6-(hydroxymethyl)-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
3-{[4,5-dihydroxy-6-(hydroxymethyl)-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
(1r,17s,18r,19r,31s)-7,19,21,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,21,24,26,28-decaene-5,12,23-trione
(1r,17s,18r,19r,31s)-7,19,21,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,21,24,26,28-decaene-5,12,23-trione
7,19,21,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,21,24,26,28-decaene-5,12,23-trione
7,19,21,25-tetrahydroxy-9,19,31-trimethyl-2,30-dioxaoctacyclo[16.11.2.0¹,¹⁷.0³,¹⁶.0⁴,¹³.0⁶,¹¹.0¹⁷,²².0²⁴,²⁹]hentriaconta-3,6,8,10,13,15,21,24,26,28-decaene-5,12,23-trione
2,5-dihydroxy-7-phenyl-6-[(3,4,5-trihydroxy-6-{[hydroxy(c-hydroxycarbonimidoylimino)methoxy]methyl}oxan-2-yl)oxy]phenalen-1-one
2,5-dihydroxy-7-phenyl-6-[(3,4,5-trihydroxy-6-{[hydroxy(c-hydroxycarbonimidoylimino)methoxy]methyl}oxan-2-yl)oxy]phenalen-1-one
2-({4,5-dihydroxy-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl}oxy)-1,8-dihydroxy-6-methoxyxanthen-9-one
2-({4,5-dihydroxy-3-[(3,4,5-trihydroxy-6-methyloxan-2-yl)oxy]oxan-2-yl}oxy)-1,8-dihydroxy-6-methoxyxanthen-9-one
3-{[(2s,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
3-{[(2s,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,7-dihydroxyxanthen-9-one
(1s,2r,13r,14r,15r,16r,17s,28r)-8,23,28-trihydroxy-6,21-dimethyl-3,10,18,25-tetraoxooctacyclo[14.11.1.0²,¹¹.0²,¹⁵.0⁴,⁹.0¹³,¹⁷.0¹⁷,²⁶.0¹⁹,²⁴]octacosa-4,6,8,11,19,21,23,26-octaen-14-yl acetate
(1s,2r,13r,14r,15r,16r,17s,28r)-8,23,28-trihydroxy-6,21-dimethyl-3,10,18,25-tetraoxooctacyclo[14.11.1.0²,¹¹.0²,¹⁵.0⁴,⁹.0¹³,¹⁷.0¹⁷,²⁶.0¹⁹,²⁴]octacosa-4,6,8,11,19,21,23,26-octaen-14-yl acetate
7-hydroxy-3-methoxy-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
7-hydroxy-3-methoxy-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5r)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}xanthen-9-one
2-{[(2s,3r,4s,5r)-4,5-dihydroxy-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,8-dihydroxy-6-methoxyxanthen-9-one
2-{[(2s,3r,4s,5r)-4,5-dihydroxy-3-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}oxan-2-yl]oxy}-1,8-dihydroxy-6-methoxyxanthen-9-one