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Term:
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3-oxo steroid +     
enone +     
(+)-(4S,5S)-4-hydroxy-3-methoxy-5-methyl-2-cyclopentenone 
(+)-(S)-ar-turmerone  
(+)-cis-isohumulone 
(+)-isoepoxydon 
(+)-nigrosporione D 
(+)-nootkatone 
(+)-sabinone 
(-)-(4R,5R)-4-hydroxy-3-methoxy-5-methyl-2-cyclopentenone 
(-)-2-epi-botryodiplodinenone 
(-)-Acorenone 
(-)-nigrosporione D 
(-)-rel-acora-2,4(14),8-trien-15-oic acid 
(-)-rotiorin 
(25R)-7alpha,26-dihydroxycholest-4-en-3-one 
(2E)-2-ethylidene-4-hydroxy-5-methyl-3(2H)-furanone 
(2E,6Z)-13-hydroxy-1-(2-hydroxy-5-methoxy-3-methylphenyl)-3,7,11,15-tetramethylhexadeca-2,6,14-triene-5,12-dione 
(2S)-5-Hydroxy-7-methoxy-8-[(E)-3-oxo-1-butenyl]flavanone 
(2Z)-4-oxobut-2-ene-1,2,4-tricarboxylic acid 
(3E)-3-[(1R,5R,6S)-5-hydroxy-7-oxabicyclo[4.1.0]heptan-2-ylidene]pyruvic acid 
(3E)-3-nonen-2-one 
(3E,5E,7E)-3-methyldeca-3,5,7-triene-2,9-dione 
(3R)-farnesyl-6-hydroxy-2,3,5-trimethyl-4-oxocyclohexa-1,5-diene-1-carboxylic acid 
(3R,8E)-3-Hydroxy-5,8-megastigmadien-7-one 
(3S,4S,5S)-3-[(E)-3-(3-heptyloxiran-2-yl)prop-2-enoyl]-3,4-dihydroxy-5-methylpyrrolidin-2-one 
(3Z)-4-hydroxy-3-penten-2-one 
(4aR,10bS)-noroxomaritidine 
(4aS,10bR)-noroxomaritidine 
(4betaH)-8alpha-(2-methylbut-2-enoyloxy)-2-oxo-1(5),10(14),11(13)-guaiatrien-12,6alpha-olide 
(4E)-6-hydroxy-1-(4-hydroxy-3-methoxyphenyl)tetradec-4-en-3-one 
(4E,6E)-2,4,6-trimethylocta-4,6-dien-3-one 
(4R)-4,5-dihydro-4-hydroxygeldanamycin 
(4R,5S,6R)-2,4,5,6-tetrahydroxycyclohex-2-en-1-one 
(4Z,7Z,10Z,13Z,15E,19Z)-17-oxodocosahexaenoic acid 
(4Z,7Z,10Z,14E,16Z,19Z)-13-oxodocosahexaenoic acid 
(4Z,8E,10Z,13Z,16Z,19Z)-7-oxodocosahexaenoic acid 
(6E,8Z)-5-oxooctadecadienoic acid 
(6E,8Z,10E,12S,14Z)-12-hydroxy-5-oxoicosatetraenoic acid 
(6E,8Z,11Z,13E,15S)-15-hydroxy-5-oxoicosatetraenoic acid 
(6E,8Z,11Z,14Z,17Z)-5-oxoicosapentaenoic acid 
(7Z,10Z,13Z,15E,19Z)-17-oxodocosapentaenoic acid 
(7Z,10Z,14E,16Z,19Z)-13-oxodocosapentaenoic acid 
(8E,10Z,13Z,16Z,19Z)-7-oxodocosapentaenoic acid 
(E)-4-oxohex-2-enal 
(E)-4-oxonon-2-en-1-ol 
(E)-4-oxonon-2-enal 
(E,E)-2-methyl-6-oxohepta-2,4-dienal 
(E,E)-2-methyl-6-oxohepta-2,4-dienol 
(R)-demethyl-4-deoxygadusol 
(S)-demethyl-4-deoxygadusol 
(S,E)-Filbertone 
(Z)-beta-damascenone 
(Z,S)-cinerolone 
(Z,S)-jasmolone 
1,1,2,4,4-Pentabromooct-1-en-3-one 
1,1,2,4-Tetrabromo-oct-1-en-3-one 
1,2-dihydroxy-5-(methylthio)pent-1-en-3-one 
1,3,4,4-Tetrabromo-but-3-en-2-one 
1,4,4,7a-tetramethyl-1,4,5,7a-tetrahydro-2H-inden-2-one 
1,5-Octadien-3-one 
1,7-bis (4-hydroxyphenyl)-1,4,6-heptatrien-3-one 
1,7-bis(4-hydroxy-3-methoxyphenyl)hept-1-ene-3,5-dione +  
1,7-bis(4-hydroxyphenyl)hepta-4E-6E-dien-3-one 
1,7-bis-(4-hydroxyphenyl)-2,4,6-heptatrienone 
1-(2,3-dihydro-1H-pyrrolizin-5-yl)-2-propen-1-one 
1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-enone 
1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)-(4E)-4-hepten-3-one 
1-Decen-3-one 
1-hepten-3-one 
1-Hexadecen-3-one 
1-hydroxy-3-oxo steroid +  
1-O-(4-oxoretinoyl)-beta-D-glucuronic acid 
1-penten-3-one  
1-phenyl-3-(phenylsulfonyl)-2-propen-1-one 
1-Tetradecen-3-one 
11,13-dihydro-8-deoxylactucin 15-glycoside 
11-oxo-ent-cassa-12,15-dien-2beta,3beta-diol 
11-oxo-ent-cassa-12,15-dien-3alpha-ol 
11-oxo-ETE +  
11-oxo-ETE-CoA 
11beta,13-dihydro-8-deoxylactucin 
11beta,13-dihydro-8-deoxylactucin 15-oxalate 
11beta,13-dihydrolactucin 
11beta,13-dihydrolactucin 15-glycoside 
11beta,13-dihydrolactucin 15-oxalate 
11beta,13-dihydrolactucopicrin 
11beta,13-dihydrolactucopicrin 15-oxalate 
11beta-hydroxyandrost-4-ene-3,17-dione 
12,20-dioxoleukotriene B4 
12-ketomethymycin +  
12-ketomethymycin N-oxide 
12beta-hydroxychaetoviridin C 
13-apo-beta-carotenone 
13-oxo-9,11-octadecadienoic acid +   
14-oxo-DoHE 
15-Hydroxygeldanamycin 
15-O-acetylbruceolide 
15-O-propionylbruceolide 
15-oxo-ETE-CoA 
15-oxoEDE 
16,17-didehydropregnenolone +  
16,17-didehydroprogesterone 
16-oxoresolvin D2 
16alpha-hydroxyandrost-4-ene-3,17-dione 
17-Aminogeldanamycin 
17-defurano-17-oxosalannin 
17-Dimethylaminogeldanamycin 
17-DMAG hydrochloride 
17-oxoresolvin D1 
17alpha-hydroxywithaferin A 
17alpha-hydroxywithanolide D 
17alpha-sitoindoside IX 
17beta-hydroxy-17-methylestra-4,9,11-trien-3-one  
17beta-Hydroxy-4-methylestr-4-en-3-one 
17beta-hydroxyandrostan-3-one +   
17beta-hydroxyestr-5(10)-en-3-one 
18-hydroxy-11-deoxycortisol 
18-hydroxycorticosterone 
18-oxoresolvin E1 
18-oxotryprostatin A 
19-hydroxyandrost-4-ene-3,17-dione 
19-Norandrostenedione 
19-Norpregna-4,17(20)-dien-3-one 
19-oxotestosterone 
1alpha-hydroxytestosterone 
2,10-dimethyl 4-hydroxy-6-oxo-4-undecen-7-yne 
2,22,25-trideoxyecdysone 
2,3,4,5-tetranor-15-oxoprostaglandin F2alpha 
2,3,4,7,9-pentahydroxy-6-methyl-1H-phenalen-1-one 
2,3-Dihydroxy-2,4-cyclopentadien-1-one 
2,4-Dodecadienamide 
2,6-Dimethyl-1,7-octadien-3-one 
2,6-dioxo-6-phenylhexa-3-enoic acid 
2-amino-4-(3-cyclohexen-1-yl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydrochromene-3-carbonitrile 
2-benzylidene-3-(cyclohexylamino)indan-1-one +  
2-cyclopenten-1-one  
2-deoxyecdysone 
2-Hepten-4-one 
2-hydroxy-6-oxo-2,4-heptadienoic acid +  
2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid 
2-hydroxyrubiarbonone E 
2-methoxy-2-Octen-4-one 
2-Methyltridec-2-en-4-one 
2-Nonen-4-one 
2-Octen-4-one 
2-oxobut-3-enoic acid 
2-oxopenta-3,4-dienoic acid 
2-trans-(+)-abscisic aldehyde 
20-epi-isoiguesterinol 
20-hydroxytubocapsanolide A 
20-oxo-5-O-beta-mycaminosyltylactone 
23-hydroxytubocapsanolide A 
25-deoxyecdysone 
27-hydroxywithanone 
28-deoxonimbolide  
3'-hydroxy-e,e-caroten-3-one 
3'-hydroxyechinenone 
3,15-di-O-acetylbruceolide 
3,15-di-O-propionylbruceolide 
3,5-dihydroxy-2-(1'-oxo-3'-hexadecenyl)-2-cyclohexene-1-one 
3-(4,6-dihydroxy-3-oxocyclohexa-1,4-dien-1-yl)acrylic acid 
3-[(5E)-5-methyl-4-oxo-2-hydroxy-5-octenyl]glutarimide 
3-amino-2-carboxamine-6(R)-chloro-4(R),5(S)-dihydroxy-cyclohex-2-en-1-one 
3-cis-hydroxy-beta,epsilon-caroten-3'-one 
3-dehydro-4-carboxyzymosterol 
3-dehydro-6-deoxo-28-norteasterone 
3-dehydro-6alpha-hydroxy-28-norteasterone 
3-dehydro-6alpha-hydroxyteasterone 
3-dehydroecdysone 
3-dehydrosphingosine 
3-Hepten-2-one 
3-hexen-2-one 
3-hydroxy-alpha-ionone 
3-Methyl-3-hepten-2-one 
3-Methylene-2-octanone 
3-Nonen-5-one 
3-O-methyl-isosecotanapartholide 
3-oxo Delta(7)-steroid +  
3-oxo-5alpha-steroid +   
3-oxo-5beta-steroid +   
3-oxo-Delta(1) steroid +   
3-oxo-Delta(4) steroid +   
A 3-oxo steroid conjugated to a C=C double bond at the alpha,beta position.
3-oxo-Delta(5)-steroid +   
3beta,12-dihydroxy-13-methyl-5,8,11,13-podocarpatetraene-7-one 
3E-Hepten-2,5-dione 
3E-Nonen-2,5-dione 
3E-Tridecen-2-one 
3PO 
3Z-Hepten-2,5-dione 
3Z-Nonen-2,5-dione 
4',4'-dihydroxyechinenone 
4'-epichaetoviridin A 
4'-epichaetoviridin F 
4'-hydroxyechinenone 
4,5-dihydro-17-O-demethylgeldanamycin 
4,5-dihydro-7-O-descarbamoyl-7-hydroxygeldanamycin 
4,5-dihydrocortisone +   
4,5-Dimethyl-4-hexen-3-one 
4,6,6-trimethylbicyclo[3.1.1]hept-3-en-2-one +  
4,6-Dimethyl-4E-hepten-3-one 
4-(2,6,6-Trimethylcyclohex-1-enyl)but-2-en-4-one 
4-(Hydroxymethyl)-3-methoxy-5-methylcyclopent-2-enone 
4-androsten-17beta-ol-3-one glucosiduronate 
4-coumaroyltriacetic acid lactone 
4-hexen-3-one +  
4-hydroxy-5-methyl-2-methylenefuran-3-one 
4-Hydroxy-5-methyl-3(2H)-thiophenone 
4-hydroxyprotoasukamycin +  
4-Methyl-1-hepten-3-one 
4-Methyl-1-hexen-3-one 
4-Methyl-4E-hepten-3-one 
4-Methyl-4E-hexen-3-one 
4-Octen-3-one 
4-Oxohex-5-enyl acetate 
4alpha-methyl-3-oxosteroid +  
4alpha-methyl-5alpha-cholest-8-en-3-one 
4S-methyl-1-hepten-3-one 
5'-epichaetoviridin A 
5-(2,2-diferuloylethen-1-yl)thalidomide 
5-[2-(feruloyl)ethen-1-yl]thalidomide 
5-amino-5-deoxy-3-dehydroshikimic acid 
5-Ethyl-2E-undecen-4-one 
5-hydroxy-7-prop-2-en-(E)-ylidene-7,7a-dihydro- 2H-cyclopenta[b]pyran-6-one 
5-hydroxy-7-prop-2-en-(Z)-ylidene-7,7a-dihydro- 2H-cyclopenta[b]pyran-6-one 
5-Methyl-1-hexen-3-one 
5-Methyl-3E-hexen-2-one 
5-Methyl-4-sulfanyl-2,3-dihydrothiophen-3-one 
5-O-beta-D-mycaminosyl-20-oxotylonolide 
5-O-beta-D-mycaminosyltylactone 
5-O-mycaminosyltylonolide 
5alpha,6beta,17alpha,27-tetrahydroxywithanolide 
5alpha,6beta,17alpha-trihydroxywithanolide 27-O-beta-D-glucoside 
5alpha-androst-16-en-3-one 
5alpha-cholest-8-en-3-one 
6-\{(1S,5S)-4-oxo-5-[(2Z)-pent-2-en-1-yl]cyclopent-2-en-1-yl\}hexanoic acid +  
6-acetylnimbandiol 
6-deacetylnimbin 
6-dehydrotestosterone +  
6-Hydroxyshogaol 
6-Methyl-2-hepten-4-one 
6-Methyl-3-hepten-2-one, trans- 
6-Methyl-3E,5-heptadien-2-one 
6Z,9Z-Heneicosadien-11-one 
7,9-di-tert-butyl-1-oxaspiro[4.5]deca-6,9-diene-2,8-dione 
7-(4''-hydroxy-3''-methoxyphenyl)-1-phenyl-4E-heptene-3-one 
7-deacetyl-17-epinimolicinol 
7-deacetyl-7-benzoylgedunin 
7-deacetylgedunin 
7-epiclusianone 
7-Ethyl-4E-dodecen-6-one 
7-Ethyl-4E-undecen-6-one 
7-Methyl-3-octen-2-one 
7-oxoresolvin D2 
7alpha,12alpha,26-trihydroxycholest-4-en-3-one 
8-demethyl-8-(2,3,4-O-trimethyl-alpha-L-rhamnosyl)tetracenomycin C 
8-demethyl-8-(2,3-O-dimethyl-alpha-L-rhamnosyl)tetracenomycin C 
8-demethyl-8-(2-O-methyl-alpha-L-rhamnosyl)tetracenomycin C 
8-demethyl-8-(alpha-L-rhamnosyl)tetracenomycin C 
8-demethyltetracenomycin C 
8-deoxylactucin 15-oxalate 
8-deoxylactucin-15-glycoside 
8-oxoresolvin D1 
9-cis-4-oxoretinoic acid 
9-cis-retinoyl-beta-D-glucuronide 
9-hydroxy hedychenone 
9-oxo-10E,12E-ODE 
9-oxo-ETE 
9-oxo-ODE 
[10]-Shogaol 
[12]-Shogaol 
[4-(6-methylheptanoyl)-5-oxo-2,5-dihydrofuran-3-yl]methyl phosphate 
[6]-Shogaol  
[8]-Shogaol 
Ab-5046-A 
aclacinomycin Y 
aculeatol E 
agglomerin F 
aignopsane ketal 
albaflavenone 
all-trans-4-oxo-16-hydroxyretinoic acid 
all-trans-4-oxo-18-hydroxyretinoic acid 
all-trans-4-oxoretinal  
all-trans-4-oxoretinoic acid +   
all-trans-4-oxoretinol  
alpha-ionone +   
alpha-irone 
alpha-nimolactone 
amomol A 
amomol B 
andrastin D +  
androstane-3,17-dione +   
antroquinonol  
arabidopside +  
arisugacin A 
arisugacin B 
Asenjonamide A 
Asenjonamide B 
asperenone 
australifungin 
BCI-215 
BE-54238A 
BE-54238B 
beclomethasone dipropionate 
benquitrione 
benzylideneacetone +   
beta-bitter acid +   
beta-damascenone  
beta-nimolactone 
bicyclopyrone 
biliatresone 
bisdemethoxycurcumin  
BMS-192548 
bruceanol D 
bruceolide +  
burchellin 
buten-2-one  
butremycin 
campest-4-en-3-one 
cangoronin 
canthin-6-one +   
caribenol B 
cassiarin B 
cetoniacytone A 
chaetomugilin A 
chaetomugilin D  
chaetoviridin A 
chaetoviridin B 
chaetoviridin C +  
chaetoviridin D 
chaetoviridin E 
chaetoviridin G 
chaetoviridin H 
chaetoviridin I 
chalcones +   
chermesinone A 
chermesinone B 
chermesinone C 
chloroprallethrin 
chondrochloren A 
chondrochloren B 
chromone +   
Chrysotrione A 
Chrysotrione B 
ciliobrevin D 
citranaxanthin 
citrifolinoside 
CJ-01 
Cladosporiumin E 
Cladosporiumin H 
coelimycin P1 
Colomitide D 
comosone A 
cornusalterin F 
CT2108A 
CT2108B 
curcumin +   
curcumin 4'-O-beta-D-gentiotetraside 
curcumin 4'-O-beta-D-gentiotrioside 
cystodytin D +  
cystodytin E +  
cystodytin F 
cystodytin G 
cystodytin H 
cystodytin I 
dafachronic acids +  
dehydrovomifoliol +  
demethoxycurcumin  
demethyllactenocin 
demethylmacrocin 
demethylzeylasteral 
deoxyherqueinone 
deoxynivalenol +   
desacetyldoronine 
drummondin D 
drummondin E 
drummondin F 
drymaritin 
elloramycin A 
Enaminomycin C 
epi-isochromophilone II 
epitestosterone 17-O-(beta-D-glucuronide) 
Epohelmin A 
Epohelmin B 
Epoxypholamin A 
Epoxypholamin B 
Ethyl-2-amino-1-cyclohexene-1-carboxylate 
eupaheliangolide A 
Eupenicinicol A 
Eupenicinicol B 
Eupenicinicol C 
Eupenicinicol D 
eurycomanone  
Falcarindione 
Falconensone A 
Falconensone B 
feruloylacetic acid 
filicinic acid +  
finasteride  
fleephilone 
floridanine 
florosenine 
fumicycline A 
funalenone 
futoenone 
gedunin +   
Geldanamycin B 
Geldanamycin D 
gibberellin A51-catabolite 
gibberellin A8-catabolite 
gingerenone B 
Ginsenoyne E 
globostellatic acid A 
globostellatic acid B 
globostellatic acid C 
globostellatic acid D 
glycyrrhetic acid 3-O-glucuronide 
glycyrrhizinic acid  
grasshopper ketone 
gutolactone 
hainanic acid A 
Hamavellone A 
Hamavellone B 
harziphilone 
hedychilactone D 
hookerianamide H 
Hulupinic acid 
Humulinic acid A 
Hydroxyiso-9-methylstreptimidone 
hydroxysafflor yellow A  
hypothemycin 
ikarugamycin +  
indigo carmine (acid form) 
INDY +  
integric acid 
ipsdienone 
isariotin F 
iso-precytochalasin 
isobrucein A 
isodrummondin D 
isoiguesterin 
isonordoperoxide 
isophorone +   
isosecotanapartholide 
Junionone 
kadlongilactone B 
kadsurenin C 
kadsurenin K 
kadsurenin L 
ketocytochalasin 
lactucin +   
lactucin 15-glycoside 
lactucin 15-oxalate 
lactucopicrin 
lactucopicrin 15-oxalate 
lavendiol 
Lepalone 
lobophytumin A 
lobophytumin E 
longirostrerone B 
longirostrerone D 
Luteoxepinone 
lymphostin 
macrocin 
maremycin G 
MC1568  
MCB-613 
Methyl 2-cyano-3-(dimethylamino)acrylate 
methyl \{2-[(1R)-1-(3,4-dimethoxyphenyl)-4-oxocyclohex-2-en-1-yl]ethyl\}methylcarbamate 
methyl propenyl ketone +  
methylheptenone 
methyltestosterone  
methymycin 
microclavatin 
militarinone A 
mimosifolenone 
minabeolide 5 
minabeolide 8 
mollicellin C 
mollicellin E 
mollicellin K 
mollicellin L 
monascorubrin 
Moniliformin 
Moniliformin potassium salt 
mustakone 
Mutanocyclin 
N-\{4-[(1E)-3-oxo-3-phenylprop-1-en-1-yl]phenyl\}-2,2-diphenylacetamide 
narbomycin 
narbonolide +  
nardoperoxide 
Nectriatone C 
Neocarzilin A 
Neocarzilin B 
neomethymycin 
neopikromycin 
neurolenin A 
neurolenin B 
neurolenin C 
neurolenin D 
Nigrosporione B 
Nigrosporione C 
nimbin +  
nimolicinol 
norcaesalpinin D 
norcaesalpinin E 
novamethymycin 
novapikromycin 
ochrocarpinone A 
ochrocarpinone B 
ochrocarpinone C 
onetine +  
oridonin  
otosenine +   
oxandrolone  
oxymetholone +   
p-hydroxyphenylbut-3-ene-2-one 
p-menth-4(8)-en-3-one +   
p-menthadien-3-one +  
paraminabeolide F 
paxilline  
petasin 
PFI-3 
phorbol +   
physalin B 
physalin D 
physalin F 
physalin G 
phytocassane +  
Piceamycin 
pikromycin 
Pinicoloform 
Plocamenol C 
Podosporin A 
Pramanicin  
Prehumulinic acid 
premithramycin A2' 
premithramycin A3' 
proansamycin X 
proINDY 
prostaglandins A +   
prostaglandins B +   
prostaglandins J +   
protoasukamycin +  
purpurquinone A 
purpurquinone B 
purpurquinone C 
quassimarin 
radicicol  
resiniferatoxin  
rosaramicin 
rottlerin  
rubiarbonone E 19-acetate 
rubrorotiorin 
samaderine B 
samaderine E 
samaderine X 
samaderine Y 
samaderine Z 
sceliphrolactam 
sch 642305 
sch 725432 
scytonemin 
Seiridiasteriscane A 
semi-beta-carotenone 
simalikalactone D 
sitoindoside IX 
SN-38 carboxylic acid 
stepharine 
steroid 1,3-dione +  
Streptazone B1 
Streptazone B2 
Syoyualdehyde 
TAN-1612 
taxine B 
terretonin 
testosterone 17-glucosiduronic acid  
tetrahydroxycurcumin 
tilmicosin  
tinyatoxin 
TMC-1A 
TMC-1B 
TMC-1C 
TMC-1D 
Trans, trans-3,5-Octadien-2-one 
trichodimerol 
triptohypol A 
triptohypol B 
tubocapsanolide A +  
tubocapsanolide F 
tylactone +   
tylosin  
valienone +  
valienone 7-phosphate 
vibsanin B 
Virgaricin B 
viridicatumtoxin 
wilforol A 
withaferin A +   
withalongolide A 
withalongolide B 
withalongolide C 
withanolide D +  
withanone 27-O-beta-D-glucoside 
xenovulene A 
yadanziolide B 
yadanziolide T 
yadanziolide U 
yanuthones +  
yucalexin P8 
zerumboneoxide 
zhankuic acid A +  
zhankuic acid A methyl ester 
zymosterol intermediate 2 
 aldosterone +   
 algestone +  
 corticosterone +   
 cortisol +   
 cortisone +   
 cyproterone +   
 deoxycortisol +   
 dienogest  
 epitestosterone +   
 fludrocortisone +   
 fluticasone +   
 megestrol +   
 nandrolone +   
 norethisterone +   
 progesterone +   
 testosterone +   
 tixocortol +  
 triamcinolone +   

Synonyms
Related Synonyms: 3-Oxo-delta4-steroid ;   3-oxo Delta(4)-steroids ;   Formula=C19H27OR ;   SMILES=C12C(C3C(C(CC3)*)(C)CC1)CCC=4C2(CCC(C4)=O)C ;   a 3-oxo-Delta(4)-steroid
Alternate IDs: CHEBI:13604 ;   CHEBI:1626 ;   CHEBI:20157
Xrefs: KEGG:C00619 ;   MetaCyc:3-Oxo-Delta-4-Steroids

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