Search Results for compound
Searching compound for 3 hydroxynicotine acid returned 62915 results.
Displaying compounds 18401 - 18425 of 62915 in total
[3-({[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy][(2R)-3-[(11Z)-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched iupac: … ]phosphinic acid ... [3-({[(2R)-2-[(13Z)-docos-13-enoyloxy]-3-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy](hydroxy)phosphoryl ... }oxy)-2-hydroxypropoxy][(2R)-3-[(11Z)-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy …
[2-hydroxy-3-({hydroxy[(2R)-3-[(11Z)-icos-11-enoyloxy]-2-[(13Z)-icos-13-enoyloxy]propoxy]phosphoryl}oxy)propoxy][(2R)-3-[(11Z)-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic acid
Matched iupac: … acid ... [2-hydroxy-3-({hydroxy[(2R)-3-[(11Z)-icos-11-enoyloxy]-2-[(13Z)-icos-13-enoyloxy]propoxy]phosphoryl}oxy ... )propoxy][(2R)-3-[(11Z)-octadec-11-enoyloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphinic …
(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-{[5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-yl]oxy}oxane-2-carboxylic acid
Matched iupac: … 6S)-3,4,5-trihydroxy-6-{[5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-yl]oxy}oxane-2-carboxylic acid …
Matched description: … are phenolic compounds containing a flavonoid moiety which is O-glycosidically linked to glucuronic acid …
Matched description: … are phenolic compounds containing a flavonoid moiety which is O-glycosidically linked to glucuronic acid …
(2S,3S,4S,5R,6S)-6-[4-(5,7-dihydroxy-3,6-dimethoxy-4-oxo-4H-chromen-2-yl)-2-methoxyphenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid
Matched iupac: … dihydroxy-3,6-dimethoxy-4-oxo-4H-chromen-2-yl)-2-methoxyphenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid …
FDB011448
73607-09-7
11-methyl-6-methylidene-16-oxo-5-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-15-oxapentacyclo[9.3.2.1⁵,⁸.0¹,¹⁰.0²,⁸]heptadecane-9-carboxylic acid
Matched iupac: … trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-15-oxapentacyclo[9.3.2.1⁵,⁸.0¹,¹⁰.0²,⁸]heptadecane-9-carboxylic acid …
FDB023628
74841-69-3
(5S,6R)-6-{[(2R)-2-{[(4S)-4-amino-4-carboxy-1-hydroxybutylidene]amino}-2-[(carboxymethyl)-C-hydroxycarbonimidoyl]ethyl]sulfanyl}-5-hydroxyicosa-7,9,11,14-tetraenoic acid
Matched synonyms: … 5S-hydroxy-6R-(S-glutathionyl)-7E,9E,11E14Z-eicosatetraenoic acid …
Matched iupac: … amino}-2-[(carboxymethyl)-C-hydroxycarbonimidoyl]ethyl]sulfanyl}-5-hydroxyicosa-7,9,11,14-tetraenoic acid …
Matched description: … LTA4 can be hydrolyzed to the dihydroxy acid, LTB4 or it can be conjugated with glutathione (GSH) to ... Leukotrienes (LT) are a family of naturally occurring lipids that are oxygenated metabolites of arachidonic acid ... Evidence is presented which indicates that endothelial cells are unable to convert arachidonic acid to …
Matched iupac: … amino}-2-[(carboxymethyl)-C-hydroxycarbonimidoyl]ethyl]sulfanyl}-5-hydroxyicosa-7,9,11,14-tetraenoic acid …
Matched description: … LTA4 can be hydrolyzed to the dihydroxy acid, LTB4 or it can be conjugated with glutathione (GSH) to ... Leukotrienes (LT) are a family of naturally occurring lipids that are oxygenated metabolites of arachidonic acid ... Evidence is presented which indicates that endothelial cells are unable to convert arachidonic acid to …
(2S,3S,4S,5R,6R)-3,4,5-trihydroxy-6-({1-methyl-6-phenyl-1H-imidazo[4,5-b]pyridin-2-yl}amino)oxane-2-carboxylic acid
Matched iupac: … 5R,6R)-3,4,5-trihydroxy-6-({1-methyl-6-phenyl-1H-imidazo[4,5-b]pyridin-2-yl}amino)oxane-2-carboxylic acid …
FDB018915
139163-36-3
8-(3-heptyloxiran-2-yl)octa-4,6-diyn-3-ol
Matched synonyms: … 8-(3-Heptyloxiranyl)-4,6-octadiyn-3-ol, 9CI ... 9,10-Epoxy-4,6-heptadecadiyn-3-ol …
Matched iupac: … 8-(3-heptyloxiran-2-yl)octa-4,6-diyn-3-ol …
Matched iupac: … 8-(3-heptyloxiran-2-yl)octa-4,6-diyn-3-ol …
FDB002665
121924-08-1
(2S,3R,4R,5S,6S)-2-{[(2R,3S,4S,5R,6S)-6-{[(2R,3R,4R,5S,6S)-2-{[(2Z,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]oxy}-2,6,10,14-tetramethylhexadeca-2,6,10,15-tetraen-1-yl]oxy}-3,5-dihydroxy-6-methyloxan-4-yl]oxy}-3,4,5-trihydroxyoxan-2-yl]methoxy}-3,5-dihydroxy-6-methyloxan-4-yl (2E,4R,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]oxy}-4-hydroxy-2,6,10,14-tetramethylhexadeca-2,6,10,15-tetraenoate
Matched synonyms: … N-(3-methylbut-3-enyl)-7H-purin-6-amine …
Matched iupac: … ,6S)-6-{[(2R,3R,4R,5S,6S)-2-{[(2Z,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3- ... dihydroxy-6-methyloxan-4-yl (2E,4R,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3- …
Matched iupac: … ,6S)-6-{[(2R,3R,4R,5S,6S)-2-{[(2Z,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3- ... dihydroxy-6-methyloxan-4-yl (2E,4R,6E,10E,14S)-14-{[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3- …
FDB018590
101339-35-9
(3,4,5-trihydroxy-6-{[5-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-6,8-dimethoxy-4-oxo-4H-chromen-7-yl]oxy}oxan-2-yl)methyl 4-(formyloxy)-3-hydroxy-3-methylbutanoate
Matched synonyms: … 5,7,4'-Trihydroxy-6,8,3'-trimethoxyflavone 7-[6''-(3-hydroxy-3-methylglutaryl)glucoside] …
Matched iupac: … }oxan-2-yl)methyl 4-(formyloxy)-3-hydroxy-3-methylbutanoate ... (3,4,5-trihydroxy-6-{[5-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-6,8-dimethoxy-4-oxo-4H-chromen-7-yl]oxy …
Matched iupac: … }oxan-2-yl)methyl 4-(formyloxy)-3-hydroxy-3-methylbutanoate ... (3,4,5-trihydroxy-6-{[5-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-6,8-dimethoxy-4-oxo-4H-chromen-7-yl]oxy …
FDB020434
36700-49-9
2-methoxy-4-(3-oxododecyl)phenyl acetate
Matched synonyms: … 1-[4-(Acetyloxy)-3-methoxyphenyl]-3-dodecanone …
Matched iupac: … 2-methoxy-4-(3-oxododecyl)phenyl acetate …
Matched iupac: … 2-methoxy-4-(3-oxododecyl)phenyl acetate …
FDB022726
712-09-4
2-(5-methoxy-1H-indol-3-yl)ethan-1-ol
Matched synonyms: … 5-Methoxyindole-3-ethanol ... 5-Methoxy-1H-indole-3-ethanol …
Matched iupac: … 2-(5-methoxy-1H-indol-3-yl)ethan-1-ol …
Matched description: … darkness is delayed by 12 hours, human 5-methoxytryptophol (and melatonin) rhythms usually require 3 …
Matched iupac: … 2-(5-methoxy-1H-indol-3-yl)ethan-1-ol …
Matched description: … darkness is delayed by 12 hours, human 5-methoxytryptophol (and melatonin) rhythms usually require 3 …
(E)-(4-aminobutylidene)(3-aminopropyl)amine
Matched synonyms: … N,C-di(3-aminopropyl)-imine ... N-(4-aminobutylidene)-N-(3-aminopropyl)amine …
Matched iupac: … (E)-(4-aminobutylidene)(3-aminopropyl)amine …
Matched iupac: … (E)-(4-aminobutylidene)(3-aminopropyl)amine …
FDB008116
542-78-9
propanedial
Matched description: … MDA is then directly formed by β-scission of a 3-hydroperoxyaldehyde or by reaction between acrolein ... It is used as an indicator of fatty acid and lipid peroxidation, and oxidative changes in foods
MDA ... other "thiobarbituric reactive substances" (TBARS) condense with two equivalents of thiobarbituric acid …
FDB015878
23939-69-7
(8E,10E,12E,14E,16E,18E,20E,22Z,24E)-25-(4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-6,6,10,14,19,23-hexamethylpentacosa-8,10,12,14,16,18,20,22,24-nonaene-2,7-dione
Matched synonyms: … 3-Hydroxysemi-b-carotenone ... 3'-Hydroxy-5,6-seco-b,b-carotene-5,6-dione …
FDB021157
143114-93-6
(4E)-6-hydroxy-1-(4-hydroxy-3-methoxyphenyl)dec-4-en-3-one
Matched synonyms: … 6-Hydroxy-1-(4-hydroxy-3-methoxyphenyl)-4-decen-3-one …
Matched iupac: … (4E)-6-hydroxy-1-(4-hydroxy-3-methoxyphenyl)dec-4-en-3-one …
Matched iupac: … (4E)-6-hydroxy-1-(4-hydroxy-3-methoxyphenyl)dec-4-en-3-one …
FDB001656
34307-23-8
6,7-dihydroxy-3-(4-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}phenyl)-4H-chromen-4-one
Matched iupac: … 6,7-dihydroxy-3-(4-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}phenyl)-4H-chromen …
Matched description: … o-glycosides are o-glycosylated derivatives of isoflavonoids, which are natural products derived from 3- …
Matched description: … o-glycosides are o-glycosylated derivatives of isoflavonoids, which are natural products derived from 3- …
(2R,3R)-2-(4,5-dihydroxy-2-{2,3,4-trihydroxy-6-[(2R,3R)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-2-yl]phenyl}phenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
Matched description: … Epigallocatechin is a flavan-3-ol containing a benzopyran-3,5,7-triol linked to a 3,4,5-hydroxyphenyl …
FDB022829
90393-60-5
N-[(3R,4S,5R)-6-{[(2R,3R,4R,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-{[(2S,3R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]oxy}-4,5-dihydroxy-1-oxo-3-{[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}hexan-2-yl]acetamide
Matched synonyms: … O-b-D-galactopyranosyl-(1->3)-O-[O-b-D-galactopyranosyl-(1->4)-2-(acetylamino)-2-deoxy-b-D-glucopyranosyl ... O-b-D-Gal-(1->3)-O-[O-b-D-Gal-(1->4)-2-(acetylamino)-2-deoxy-b-D-Glc-(1->6)]-2-(acetylamino)-2-deoxy-D-Galactose ... O-beta-D-galactopyranosyl-(1->3)-O-[O-beta-D-galactopyranosyl-(1->4)-2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl …
Matched name: … O-beta-D-Gal-(1->3)-O-[O-beta-D-Gal-(1->4)-2-(acetylamino)-2-deoxy-beta-D-Glc-(1->6)]-2-(acetylamino) …
Matched iupac: … N-[(3R,4S,5R)-6-{[(2R,3R,4R,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-{[(2S,3R,6R)-3,4,5-trihydroxy ... -6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]oxy}-4,5-dihydroxy-1-oxo-3-{[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy …
Matched description: … O-b-D-galactopyranosyl-(1->3)-O-[O-b-D-galactopyranosyl-(1->4)-2-(acetylamino)-2-deoxy-b-D-glucopyranosyl …
Matched name: … O-beta-D-Gal-(1->3)-O-[O-beta-D-Gal-(1->4)-2-(acetylamino)-2-deoxy-beta-D-Glc-(1->6)]-2-(acetylamino) …
Matched iupac: … N-[(3R,4S,5R)-6-{[(2R,3R,4R,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-{[(2S,3R,6R)-3,4,5-trihydroxy ... -6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]oxy}-4,5-dihydroxy-1-oxo-3-{[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy …
Matched description: … O-b-D-galactopyranosyl-(1->3)-O-[O-b-D-galactopyranosyl-(1->4)-2-(acetylamino)-2-deoxy-b-D-glucopyranosyl …
{[(2R,3R,5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({[(2R)-2-(docosa-4,7,10,13,16,19-hexaenoyloxy)-3-(hexadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)phosphinic acid
Matched synonyms: … 1-Palmitoyl-2-docosahexaenoyl-sn-glycero-3-cytidine-5'-diate ... 1-palmitoyl-2-docosahexaenoyl-sn-glycero-3-cytidine-5'-diphosphate ... 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-CDP …
Matched iupac: … (hexadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({[(2R)-2-(docosa-4,7,10,13,16,19-hexaenoyloxy)-3- …
Matched description: … the docosahexaenoic acid moiety is derived from fish oils. ... C-1 position and one chain of docosahexaenoic acid at the C-2 position. ... The palmitic acid moiety is derived from fish oils, milk fats, vegetable oils and animal fats, while …
Matched iupac: … (hexadecanoyloxy)propoxy](hydroxy)phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({[(2R)-2-(docosa-4,7,10,13,16,19-hexaenoyloxy)-3- …
Matched description: … the docosahexaenoic acid moiety is derived from fish oils. ... C-1 position and one chain of docosahexaenoic acid at the C-2 position. ... The palmitic acid moiety is derived from fish oils, milk fats, vegetable oils and animal fats, while …
{[(2R,3R,5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3-(octadec-11-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid
Matched synonyms: … 1-Vaccenoyl-2-arachidonoyl-sn-glycero-3-cytidine-5'-diate ... 1-vaccenoyl-2-arachidonoyl-sn-glycero-3-cytidine-5'-diphosphate ... 1-(11Z-octadecenoyl)-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-CDP …
Matched iupac: … (octadec-11-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3- …
Matched description: … The vaccenic acid moiety is derived from butter fat and animal fat, while the arachidonic acid moiety ... -1 position and one chain of arachidonic acid at the C-2 position. ... CDP-DG(18:1(11Z)/20:4(5Z,8Z,11Z,14Z)), in particular, consists of one chain of vaccenic acid at the C …
Matched iupac: … (octadec-11-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3- …
Matched description: … The vaccenic acid moiety is derived from butter fat and animal fat, while the arachidonic acid moiety ... -1 position and one chain of arachidonic acid at the C-2 position. ... CDP-DG(18:1(11Z)/20:4(5Z,8Z,11Z,14Z)), in particular, consists of one chain of vaccenic acid at the C …
{[(2R,3R,5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-3-(octadec-9-enoyloxy)-2-(octadecanoyloxy)propoxy]phosphoryl}oxy)phosphinic acid
Matched synonyms: … 1-(9Z-octadecenoyl)-2-octadecanoyl-sn-glycero-3-CDP ... 1-Oleoyl-2-stearoyl-sn-glycero-3-cytidine-5'-diate ... 1-oleoyl-2-stearoyl-sn-glycero-3-cytidine-5'-diphosphate …
Matched iupac: … (octadec-9-enoyloxy)-2-(octadecanoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... 5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-3- …
Matched description: … chain of stearic acid at the C-2 position. ... acid moiety is derived from animal fats, coco butter and sesame oil. ... CDP-DG(18:1(9Z)/18:0), in particular, consists of one chain of oleic acid at the C-1 position and one …
Matched iupac: … (octadec-9-enoyloxy)-2-(octadecanoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... 5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-3- …
Matched description: … chain of stearic acid at the C-2 position. ... acid moiety is derived from animal fats, coco butter and sesame oil. ... CDP-DG(18:1(9Z)/18:0), in particular, consists of one chain of oleic acid at the C-1 position and one …
{[(2R,3R,5R)-3,4-dihydroxy-5-(2-hydroxy-4-imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3-(octadec-9-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid
Matched synonyms: … 1-Oleoyl-2-arachidonoyl-sn-glycero-3-cytidine-5'-diate ... 1-oleoyl-2-arachidonoyl-sn-glycero-3-cytidine-5'-diphosphate ... 1-(9Z-octadecenoyl)-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-CDP …
Matched iupac: … (octadec-9-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3- …
Matched description: … acid moiety is derived from animal fats and eggs. ... and one chain of arachidonic acid at the C-2 position. ... CDP-DG(18:1(9Z)/20:4(5Z,8Z,11Z,14Z)), in particular, consists of one chain of oleic acid at the C-1 position …
Matched iupac: … (octadec-9-enoyloxy)propoxy]phosphoryl}oxy)phosphinic acid ... imino-1,4-dihydropyrimidin-1-yl)oxolan-2-yl]methoxy}({hydroxy[(2R)-2-(icosa-5,8,11,14-tetraenoyloxy)-3- …
Matched description: … acid moiety is derived from animal fats and eggs. ... and one chain of arachidonic acid at the C-2 position. ... CDP-DG(18:1(9Z)/20:4(5Z,8Z,11Z,14Z)), in particular, consists of one chain of oleic acid at the C-1 position …
FDB023086
521-18-6
(1S,2S,7S,10R,11S,14S,15S)-14-hydroxy-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadecan-5-one
Matched synonyms: … 17-Hydroxy-androstan-3-one ... 17-Hydroxyandrostan-3-one ... 17b-Hydroxy-3-androstanone …
FDB014104
1617-68-1
1,2,5,14,18,18-hexamethyl-8-(prop-1-en-2-yl)pentacyclo[11.8.0.0²,¹⁰.0⁵,⁹.0¹⁴,¹⁹]henicosan-17-yl acetate
Matched synonyms: … 3-Acetyllupeol ... 3-O-Acetyllupeol ... Lup-20(29)-en-3-yl acetate …
Matched description: … Lupeyl acetate, also known as lupeyl acetic acid, is a member of the class of compounds known as triterpenoids …
Matched description: … Lupeyl acetate, also known as lupeyl acetic acid, is a member of the class of compounds known as triterpenoids …