electron
C19-steroid
dicarboxylic acids and O-substituted derivatives
metal oxide
NAD
NAD(P)H
chlorofluorocarbon
volatile organic compound
titanium oxides
glycol
pyrrolopurine
metalloid atom
gas molecular entity
carotenoid beta-end derivative
chlorophyll(1-)
chlorophyllide(2-)
kaolin
ultra-long-chain fatty acid
ultra-long-chain fatty acid anion
manganese dihydroxide
manganese hydroxide
electron donor
acceptor
acrolein
water
hydron
dioxygen
ATP
argon-39 atom
copper(II) phthalocyanine
copper tetrapyrrole
sarcosine
primary alcohol
GTP
halide anion
ammonia
hydrogen sulfide
methane
sulfate
urea
hydroxide
ethanol
hydrogen peroxide
chitosan
nitrite
hyaluronic acid
pantothenate
NADPH
naphthalene
carbon dioxide
carbohydrate
peptide
soybean oil
nucleoside 5'-phosphate
benzene
mineral nutrient
glycan
paralytic shellfish toxin
formaldehyde
chlorophyllide a
NADH
heteroglycan
propane-1,2-diol
chitin
dinitrogen oxide
fluoride
ketone
carbon monoxide
nucleoside 5'-triphoshate
testosterone
aldehyde
hydrogencarbonate
alginic acid
toluene
beta-carotene
nitrate
electron acceptor
methanol
organohalogen compound
hydrogen chloride
donor
ribonucleoside triphosphate
chloride
dinitrogen
lipid
glycosaminoglycan
trimethylamine
hydrogen halide
polysaccharide
chlorophyll a
(1->4)-beta-D-glucan
iron atom
dihydrogen
manganese atom
alkane
phosphate(3-)
hydrogen cyanide
sulfur dioxide
inorganic calcium salt
N-acylglucosamine
N-acyl-hexosamine
N-methyl-amino acid
N-methylglycines
acetamides
adenosine phosphate
alkaline earth metal atom
alkali metal atom
alkaloid
alkyl group
alkylamines
aminoglycan
anion
arsenate ion
arsenic molecular entity
base
benzenes
benzoates
benzopyrrole
branched-chain amino acid
bromine atom
cadmium atom
calcium atom
calcium molecular entity
carbamate ester
carbon oxide
carbonates
carotene
epoxycarotenoid
carotenoid
carotenol
chloride salt
chlorine atom
chlorine molecular entity
chromium molecular entity
molecular entity
copper molecular entity
cyclic peptide
diol
drug
monoatomic anion
monoatomic cation
enzyme inhibitor
ethanols
fluorine atom
fluorine molecular entity
glucosamines
glycine derivative
chemical entity
biological role
group
guanidines
guanosine phosphate
halogen molecular entity
halogen
organic heterocyclic compound
heterodetic cyclic peptide
hexosamine
hydrocarbon
proton
hydroxides
hydroxybenzoate
indoles
oxoacid
inorganic anion
inorganic molecular entity
inorganic oxide
inorganic peroxide
inorganic salt
inorganic sulfate salt
salt
monoatomic ion
ion
iron molecular entity
isoprenoid
lead atom
leucine
magnesium atom
magnesium molecular entity
magnesium porphyrin
manganese molecular entity
metabolite
metal cation
metalloporphyrin
methyl ester
methylamines
mitochondrial respiratory-chain inhibitor
elemental molecule
molecule
monocarboxylic acid
monohydroxybenzoate
monoatomic monocation
monoatomic polycation
mutagen
mycotoxin
naphthalenes
neoxanthin
neurotransmitter
NADP
NAD(P)
nicotinamide nucleotide
nitrogen atom
nitrous acid
nonmetal atom
nucleoside phosphate
organic heteromonocyclic compound
organic anion
organic cation
ether
organic ion
organic oxide
organic phosphate
aliphatic alcohol
organophosphorus compound
oxide
oxygen atom
oxygen molecular entity
ozone
aldopentose phosphate
peroxides
pesticide
phosphate
phosphoric acid derivative
phosphorus molecular entity
biological pigment
polar amino acid
polyester macromolecule
polyol
porphyrins
potassium atom
potassium molecular entity
propane-1,2-diols
propanediol
purine nucleoside triphosphate
purine nucleotide
purine ribonucleoside triphosphate
purine ribonucleotide
purines
pyridines
quinate
radical
reactive oxygen species
ribonucleotide
ribose phosphate
saturated fatty acid
silicic acid
silicon molecular entity
sodium atom
sodium chloride
sodium molecular entity
sodium salt
carbohydrate phosphate
sulfates
sulfide
sulfur atom
sulfur molecular entity
sulfuric acid
terpenoid
tertiary alcohol
tetrapyrrole
tetraterpenoid
organic heterotricyclic compound
threonine
tin atom
toluenes
toxin
micronutrient
Anatoxin a
transition element atom
monoatomic trication
organic heterobicyclic compound
vanadium molecular entity
very long-chain fatty acid
violaxanthin
xanthophyll
xylene
zinc atom
zinc molecular entity
methanesulfonic acid
zeaxanthin
boron atom
arsenic atom
silicon atom
carbon atom
cobalt atom
detergent
nitrobenzene
acetamide
chlorophyll b
lead(0)
chromium atom
nickel atom
alloxanthine
alpha-carotene
phosphorus atom
molybdenum atom
copper atom
beta-D-glucan
rubber particle
lutein
fatty acid anion
ammonium
amino sugar
chlorophyll
carbonic acid
carboxylic acid anion
mononucleotide
arsenate(3-)
hydrogen fluoride
deuteron
deuterium atom
tritium atom
silicate(4-)
azanide
monocarboxylic acid amide
oxonium
methanide
hydrosulfide
bacteriochlorophyll a
gold(0)
copper(0)
lithium atom
aluminium oxide
photon
alpha-particle
helium atom
helium-3 atom
neutron
positron
isobutyl group
monoatomic dication
thallium
sulfur hexafluoride
silver atom
antimony atom
caesium atom
silicon dioxide
formic acid
salicylate
alcohol
octacosanoic acid
octacosanoate
Talc
titanium dioxide
barium atom
leucinate
leucinium
tertiary amine
amine
epoxide
amide
europium atom
calcium carbonate
application
fundamental particle
monoatomic entity
coordination entity
oxoacid derivative
inorganic hydride
organic fundamental parent
organic group
hydrocarbyl group
organyl group
atom
monoatomic hydrogen
atomic nucleus
nucleon
primary amide
elemental molecular entity
elemental hydrogen
organosulfur compound
elemental oxygen
diatomic oxygen
triatomic oxygen
diatomic nitrogen
elemental nitrogen
polyatomic anion
molecular messenger
antimicrobial agent
nutrient
heteroorganic entity
agrochemical
fertilizer
food
fuel
alkali metal molecular entity
alkaline earth molecular entity
pnictogen
pnictogen molecular entity
chalcogen
chalcogen molecular entity
carbon group element atom
carboxylic ester
noble gas atom
monoatomic helium
helium(2+)
boron group element atom
main group element atom
lanthanoid atom
rare earth metal atom
strontium atom
silicon oxide
silicon oxoacid
yttrium atom
scandium group element atom
lanthanum atom
zinc group element atom
titanium atom
niobium atom
titanium group element atom
vanadium group element atom
chromium group element atom
manganese group element atom
iron group element atom
cobalt group element atom
nickel group element atom
copper group element atom
cerium
neodymium atom
samarium atom
gadolinium atom
dysprosium atom
platinum(0)
sulfur oxoacid
hydracid
pnictogen oxoacid
elemental carbon
sulfur oxoacid derivative
monoatomic monoanion
elemental chlorine
monoatomic chlorine
monoatomic halogen
elemental halogen
phospho sugar
nitrogen oxoacid
nitrogen oxoanion
pnictogen oxoanion
phosphorus oxoanion
elemental pnictogen
sulfur oxoanion
chalcogen oxoacid
chalcogen oxoanion
transition element molecular entity
actinoid molecular entity
uranium molecular entity
metal atom
sulfur hydride
organosulfonic acid
sulfonic acid derivative
alpha-amino-acid anion
s-block element atom
p-block element atom
d-block element atom
f-block element atom
carboxylic acid
main group molecular entity
boron group molecular entity
carbon group molecular entity
noble gas molecular entity
lead molecular entity
cyclic compound
homocyclic compound
carbocyclic compound
hydrogen molecular entity
aluminium molecular entity
aluminium oxides
monoatomic aluminium
elemental aluminium
polycyclic compound
bicyclic compound
ortho-fused compound
olefin
acyclic olefin
alkadiene
aliphatic compound
aromatic compound
arene
organic aromatic compound
monocyclic compound
annulene
cyclic hydrocarbon
monocyclic hydrocarbon
polycyclic hydrocarbon
heteromonocyclic compound
heteropolycyclic compound
heterobicyclic compound
zinc group molecular entity
s-block molecular entity
p-block molecular entity
d-block molecular entity
f-block molecular entity
helium molecular entity
elemental helium
diatomic helium
hydrides
oxygen hydride
biomacromolecule
polyatomic cation
amino-acid cation
alpha-amino acid
amino acid
alpha-amino-acid cation
chromium group molecular entity
manganese group molecular entity
iron group molecular entity
copper group molecular entity
vanadium group molecular entity
nickel group molecular entity
platinum molecular entity
titanium group molecular entity
organic hydroxy compound
organic cyclic compound
heteroarene
benzenoid aromatic compound
macromolecule
aromatic annulene
monocyclic arene
polycyclic arene
transition element coordination entity
reagent
metallotetrapyrrole
macronutrient
halide salt
gold molecular entity
elemental gold
magnesium coordination entity
saxitoxin
nitrogen hydride
azane
aldose phosphate
calcium salt
cyclic carotene
vanadium(0)
elemental vanadium
sulfate salt
terpene
tetraterpene
surfactant
nitrogen oxide
tracer
label
alkaline earth coordination entity
inhibitor
fossil fuel
ammonium ion derivative
fused compound
carbopolycyclic compound
homopolycyclic compound
ortho-fused polycyclic arene
epoxycarotenol
steroid
17beta-hydroxy steroid
hydroxy steroid
organonitrogen compound
fatty acid
chromium oxoanion
chromium coordination entity
chromate(2-)
transition element oxoanion
oxoanion
ortho-fused bicyclic arene
ortho-fused polycyclic hydrocarbon
ortho-fused bicyclic hydrocarbon
antiinfective agent
alkali metal salt
analgesic
heterocyclic organic fundamental parent
cardiovascular drug
carbon oxoanion
carbon oxoacid
vasodilator agent
secondary alcohol
ester
nitro compound
C-nitro compound
monocarboxylic acid anion
arsenic oxoanion
phosphate ion
oxo steroid
imidazopyrimidine
pnictogen hydride
hydroxy monocarboxylic acid anion
inorganic chloride
cyclitol carboxylic acid anion
dicarboxylic acid monoester
cyclic tetrapyrrole
lepton
baryon
fermion
boson
subatomic particle
composite particle
hadron
nuclear particle
neutrino
polyatomic entity
polyatomic ion
phosphorus oxoacid derivative
phosphorus oxoacids and derivatives
alkaline earth salt
saturated organic heterocyclic parent
saturated organic heteromonocyclic parent
polycyclic ether
main-group coordination entity
carbonyl compound
organic oxo compound
organochlorine compound
heterotricyclic compound
carbobicyclic compound
monoanion
17-hydroxy steroid
inorganic radical
radical cation
radical ion
inorganic radical ion
inorganic radical cation
elemental fluorine
monoatomic fluorine
chalcogen hydride
neon molecular entity
argon molecular entity
krypton molecular entity
inorganic ion
inorganic cation
cation
carbon-14 atom
carbon-13 atom
nitrogen-15 atom
chalcocarbonic acid
organochalcogen compound
organooxygen compound
nucleotide
pyridine nucleotide
nicotinamide dinucleotide
ribonucleoside 5'-phosphate
amino-acid anion
purine ribonucleoside 5'-triphosphate
ribonucleoside 5'-triphosphate
adenosine 5'-phosphate
guanosine 5'-phosphate
barium molecular entity
elemental barium
organofluorine compound
glucan
homopolysaccharide
organic hydride
mononuclear parent hydride
silicon coordination entity
silicon oxoanion
elemental lead
titanium molecular entity
tropane alkaloid
phosphorus oxide
tetraphosphorus decaoxide
mucopolysaccharide
copper coordination entity
elemental copper
cyclic ether
acid
heteroatomic molecular entity
halide
allenes
carboxamide
phosphoric ester
sulfuric acid derivative
homopolymer macromolecule
polypyrrole
organonitrogen heterocyclic compound
oxacycle
organic heteropolycyclic compound
polycyclic heteroarene
bacteriochlorophyll
chlorophyllide
hydrocarbyl anion
magnesium tetrapyrrole
phorbines
2-amino-3-hydroxybutanoic acid
azabicycloalkane
methylindole
electron-transport chain inhibitor
respiratory-chain inhibitor
pyrazolopyrimidine
inorganic sodium salt
quinolinemonocarboxylate
anaesthetic
general anaesthetic
inhalation anaesthetic
methylbenzene
alkylbenzene
Bronsted acid
Bronsted base
Lewis acid
Lewis base
chloropicrin
straight-chain saturated fatty acid
buta-1,3-diene
butadiene
cyclic ketone
carbonate
heptane
hydrogenphosphate
peridinin
hydrogensulfate
asbestos
mineral
silicate mineral
chrysotile
riebeckite
crocidolite asbestos
serpentine mineral
tremolite asbestos
amphibole asbestos
amosite asbestos
gruenerite
serpentine asbestos
anthophyllite
anthophyllite asbestos
actinolite
actinolite asbestos
sulfide mineral
sulfide salt
carbonate salt
solvent
silicon hydroxide
dioxane
dioxanes
1,4-dioxane
acetate ester
3-oxo steroid
indicator
cyclic polypyrrole
dinucleotide
alkanesulfonic acid
3-oxo-Delta(4) steroid
microcystin
nitric acid
nitrobenzenes
silicate ion
sulfur oxide
antiseptic drug
disinfectant
polar solvent
protic solvent
protophilic solvent
amphiprotic solvent
antagonist
aluminosilicate mineral
elemental platinum
aluminium(3+)
argon atom
hydrogen atom
praseodymium atom
uranium(0)
zinc dichloride
elemental krypton
monoatomic krypton
monoatomic argon
elemental argon
argon(.1+)
monoatomic neon
elemental neon
organic amino compound
sulfur coordination entity
P450 inhibitor
onium compound
onium cation
proteinogenic amino-acid side-chain group
organic nitrogen anion
androstanoid
probe
monoatomic uranium
elemental uranium
alkyl alcohol
carbon nanotube
nanostructure
nanotube
carbon nanostructure
iron oxide
organic molecular entity
genotoxin
allergen
role
neurotoxin
tertiary amino compound
nitrate salt
inorganic nitrate salt
chemical role
nitrohydrocarbon
nitroarene
nitrogen molecular entity
organic univalent group
phthalocyanines
metallophthalocyanines
metallophthalocyanine
enal
enone
alpha,beta-unsaturated aldehyde
alpha,beta-unsaturated ketone
fucoxanthin
organic polycyclic compound
organic tricyclic compound
biochemical role
biophysical role
aetiopathogenetic role
pharmacological role
physiological role
ligand
pharmaceutical
inorganic hydroxy compound
epitope
poly(alkylene) macromolecule
polyethylene macromolecule
vinyl polymer macromolecule
poly(vinyl chloride)
copolymer macromolecule
poly(hydroxyalkanoate)
poly(hydroxybutyrate)
methyl cellulose
poly(propylene)
heterocyclic compound
carbon monoxide(1+)
chlorophyll a(1-)
kynurenate
cyclic tetrapyrrole anion
very long-chain fatty acid anion
saturated fatty acid anion
straight-chain saturated fatty acid anion
biomarker
straight-chain fatty acid
electrophilic reagent
nucleophilic reagent
chemical substance
mixture
polymer
homopolymer
poly(alkylene) polymer
polyethylene polymer
polyester polymer
monovalent inorganic cation
aluminium ion
NMDA receptor antagonist
polyurethane polymer
excitatory amino acid antagonist
amino monosaccharide
nucleobase-containing molecular entity
brevetoxin A
ciguatoxin
guanyl nucleotide
adenyl nucleotide
guanyl ribonucleotide
adenyl ribonucleotide
poly(ethylene terephthalate) polymer
vinyl polymer
polystyrene polymer
signalling molecule
reactive nitrogen species
amorphous cellulose
crystalline cellulose
emulsifier
aluminium cation
oxidising agent
carbohydrate derivative
monosaccharide derivative
pentose derivative
branched-chain amino-acid anion
1,1-diol
ketone hydrate
food additive
one-carbon compound
organic acid
trivalent inorganic cation
poison
polysaccharide derivative
N-alkylglycine
organic molecule
exopolysaccharide
divinyl chlorophyll a
divinyl chlorophyll b
eukaryotic metabolite
animal metabolite
mammalian metabolite
prokaryotic metabolite
iron sulfides
iron(2+) sulfides
greenhouse gas
propellant
EC 1.* (oxidoreductase) inhibitor
EC 1.14.* (oxidoreductase acting on paired donors, with incorporation or reduction of molecular oxygen) inhibitor
EC 3.* (hydrolase) inhibitor
EC 3.5.* (hydrolases acting on non-peptide C-N bonds) inhibitor
EC 3.5.1.* (non-peptide linear amide C-N hydrolase) inhibitor
EC 1.14.14.* (oxidoreductase acting on paired donors, incorporating of 1 atom of oxygen, with reduced flavin or flavoprotein as one donor) inhibitor
EC 1.14.14.1 (unspecific monooxygenase) inhibitor
pathway inhibitor
fungal metabolite
bacterial metabolite
human metabolite
EC 3.5.1.4 (amidase) inhibitor
raising agent
food packaging gas
food propellant
fatty acid anion 28:0
food component
environmental contaminant
refrigerant
carbohydrates and carbohydrate derivatives
olefinic compound
trivalent inorganic anion
divalent inorganic anion
monovalent inorganic anion
Nodularin
Peptidoglycan(N-acetyl-D-glucosamine)
Brevetoxin B
pheophytin
diatomaceous earth
elemental iron
iron(0)
crustacean metabolite
Daphnia magna metabolite
Daphnia metabolite
chlorophyllide a(2-)
N-acylammonia
proteinogenic amino acid derivative
non-proteinogenic amino acid
amino acid derivative
non-proteinogenic alpha-amino acid
pentose phosphate
pyrite
metal allergen
aromatic carboxylate
skatole