an oxidized electron donor

a reduced electron donor

a deaminated amino group acceptor

an aminated amino group acceptor

Charged-LEU-tRNAs

LEU-tRNAs

a 2-oxo acid

an amino acid

an acyl-CoA

a carboxylate

an oxidized ferredoxin [iron-sulfur] cluster

a reduced ferredoxin [iron-sulfur] cluster

NAD(P)H

NAD(P)+

an L-tyrosyl-[tRNAtyr]

a tRNAtyr

(2Z,4Z)-2-hydroxy-5-carboxymuconate-6-semialdehyde

4α,14α-dimethyl-porifersta-8,25(27)-dienol

2-amino-4,5-dihydroxy-6-oxo-7-(phosphooxy)heptanoate

4-methylcyclohex-1,5-diene-1-carbonyl-CoA

isoshowacene

2-hydroxyhexadecanal

16-sinapoyloxypalmitate

3-methylquinolin-2-ol

(22R)-hydroxycholesterol

N-(2-methylpropyl)hydroxylamine

chloroeremomycin

3-hydroxy-3-methylbutanoate

2',3',4'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

2',3'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

2'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

rhamnosyl tetracyclic spinosyn pseudoaglycone

rhamnosyl tricyclic spinosyn pseudoaglycone

spinosyn tricyclic macrolactone

11-dehydro-15-oxo spinosyn macrolactone

15-oxo spinosyn macrolactone

spinosyn macrolactone

diethylamine N-oxide

triethylamine N-oxide

UDP-2-acetamido-2-deoxy-α-D-ribo-hex-3-uluronate

nitroxyl

trans,octacis-decaprenylphospho-β-D-arabinofuranose

1,3-dihydro-2H-imidazol-2-one

2-phenylethyl β-D-glucopyranoside

formyl hopane

ribosyl hopane

adenosyl hopane

(2Z)-2-hydroxypenta-2,4-dienoate

(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate

(2Z)-2,4-dihydroxypent-2-enoate

(2E,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA

(3R,5Z,8Z,11Z,14Z,17Z)-3-hydroxydocosapentaenoyl-CoA

(5Z,8Z,11Z,14Z,17Z)-3-oxodocosapentaenoyl-CoA

(+)-3'-hydroxylarreatricin

(+)-larreatricin

2-trans,4-trans-xanthoxin

(4-hydroxyphenyl)acetate

ammonia

5-hydroxyindole thiazolidine carboxylate

(2S,4S)-2-methyl-2,4-dihydroxydihydrofuran-3-one

enol-phenylpyruvate

(2S,4S)-2-methyl-2,3,3,4-tetrahydroxytetrahydrofuran

H₂O

N-acetylglutamyl-phosphate

N-acetyl-L-glutamate 5-semialdehyde

(S)-2-acetolactate

(S)-2-aceto-2-hydroxybutanoate

(R)-2,3-dihydroxy-3-methylpentanoate

CO₂

γ-L-glutamyl 5-phosphate

thiamine phosphate

4-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine

nicotinate adenine dinucleotide

β-nicotinate D-ribonucleotide

prenyl diphosphate

succinate semialdehyde

4-aminobutanoate

3-oxopropanoate

4'-phosphopantetheine

3-phosphooxypyruvate

4-phosphooxy-L-threonine

(3R)-3-hydroxy-2-oxo-4 phosphooxybutanoate

5-amino-1-(5-phospho-β-D-ribosyl)imidazole

5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate

5'-phosphoribosyl-4-(N-succinocarboxamide)-5-aminoimidazole

2-(formamido)-N¹-(5-phospho-β-D-ribosyl)acetamidine

N²-formyl-N¹-(5-phospho-β-D-ribosyl)glycinamide

N¹-(5-phospho-β-D-ribosyl)glycinamide

5-phospho-β-D-ribosylamine

isopentenyl diphosphate

3-dehydroquinate

3-deoxy-D-arabino-heptulosonate 7-phosphate

5-enolpyruvoyl-shikimate 3-phosphate

shikimate 3-phosphate

phosphoenolpyruvate

(S)-dihydroorotate

anthranilate

orotidine 5'-phosphate

carbamoyl phosphate

(S)-3-methyl-2-oxopentanoate

4-methyl-2-oxopentanoate

3-methyl-2-oxobutanoate

L-arginino-succinate

L-canavanine

canavaninosuccinate

O-ureido-L-homoserine

glycerone phosphate

imidazole acetol-phosphate

D-erythro-imidazole-glycerol-phosphate

histidinol

L-histidinol phosphate

α-D-glucosamine 1-phosphate

oxaloacetate

autoinducer 2

S-ribosyl-L-homocysteine

(R)-4'-phosphopantothenate

(R)-pantothenate

3-keto-L-gulonate 6-phosphate

4-(2'-carboxyphenyl)-4-oxobutyryl-CoA

2-succinylbenzoate

1,4-dihydroxy-2-naphthoyl-CoA

xanthine

6-phospho D-glucono-1,5-lactone

glutathione disulfide

acetyl phosphate

hydrogen peroxide

4-amino-2-methyl-5-(phosphooxymethyl)pyrimidine

2-dehydropantoate

(R)-mevalonate

aminoacetone

DNA without lesion

(lipoyl)adenylate

thiamine diphosphate

2-(α-hydroxyethyl)thiamine diphosphate

ethanolamine

D-gluconate 6-phosphate

(4S)-4-hydroxy-2-oxoheptanedioate

(2Z,4Z)-2-hydroxyhepta-2,4-dienedioate

(R)-mevalonate diphosphate

(R)-5-phosphomevalonate

(indol-3-yl)pyruvate

3-dehydroshikimate

shikimate

prephenate

2-oleoylglycerol

N-acetyl-β-D-glucosamine-1,6-anhydro-N-acetyl-β-D-muramate

dimethylsulfoniopropanoate

4-acetamidobutanoate

4-acetamidobutanal

D-glucurono-6,3-lactone

propynoate

prop-2-ynal

3,4-dihydroxyphenylacetaldehyde

3-methoxy-4-hydroxyphenylglycolaldehyde

5-hydroxyindole acetate

5-hydroxyindole acetaldehyde

4-imidazoleacetate

imidazole acetaldehyde

L-selenocystathionine

O-acetyl-L-serine

o-(α-D-glucosyl)-polyglycerol phosphate

poly (glycerol phosphate)

(R)-mandelate

(S)-mandelate

(1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate

2-succinyl-5-enolpyruvoyl-6-hydroxy-3-cyclohexene-1-carboxylate

isochorismate

N-(5-phosphoribosyl)-anthranilate

(R)-4-phosphopantoate

(R)-4'-phosphopantothenoyl-L-cysteine

β-D-ribosylnicotinate

5-(methylsulfanyl)-α-D-ribose

S-methyl-5'-thioadenosine

CDP-glycerol

N-succinyl-2-amino-6-ketopimelate

(S)-2,3,4,5-tetrahydrodipicolinate

pseudouridine 5'-phosphate

O-D-alanyl-poly(ribitol phosphate)

poly(ribitol phosphate)

histidinal

salicyl alcohol

D-galactosamine-6-phosphate

N-acetyl-D-galactosamine 6-phosphate

3-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]benzenesulfonate

2,2'-disulfonyl azobenzene

phthalate

1,4-dihydroxy-2-naphthoate

4-amino-4-deoxychorismate

hydrogen selenide

2-isopropylmaleate

(2R,3S)-3-isopropylmalate

(2S)-2-isopropylmalate

(2R,3S)-3-methylmalate

citraconate

2-oxovalerate

3-ethylmalate

(2S)-2-isopropyl-3-oxosuccinate

carbonic acid

2-phenylethanol

2-methylbutanal

2-methylbutanol

3-methylbutanal

3-methylbutanol

isobutanol

indole-3-glycol aldehyde

indole-3-glycol

5-hydroxytryptophol

tartronate semialdehyde

arsenite

N-succinyl-L,L-2,6-diaminopimelate

carbon monoxide

acetoacetate

2-iminoacetate

N-acetyl-D-muramate 6-phosphate

1,6-anhydro-N-acetyl-β-muramate

pseudouridine

ManNAc-GlcNAc-PP-undecaprenol

N-acetyl-α-D-glucosaminyldiphospho-ditrans,octacis-undecaprenol

(2R,4S)-2-methyl-2,3,3,4-tetrahydroxytetrahydrofuran

(2R,4S)-2-methyl-2,4-dihydroxydihydrofuran-3-one

indole-3-lactate

4-amino-2-methyl-5-pyrimidinemethanol

3-amino-1-hydroxyacetone 1-phosphate

(2S)-2-amino-3-oxo-4-phosphooxybutanoate

quinolinate

urea

2-amino-3-carboxymuconate-6-semialdehyde

(2E,6E)-farnesol

(2E,6E)-farnesyl diphosphate

5,10-methenyltetrahydrofolate mono-L-glutamate

(R)-citramalate

1-oleoyl-2-lyso-glycerone phosphate

S-(4-hydroxy-nonenal-3-yl)-L-cysteinylglycine

α-D-glucosamine 6-phosphate

(2R)-2,3-dihydroxy-3-methylbutanoate

Reactive Blue 5

2,3-diphospho-D-glycerate

3-phospho-D-glyceroyl-phosphate

(R)-glycerate

2-phospho-D-glycerate

3-phospho-D-glycerate

sn-glycerol 3-phosphate

oxygen

hydrogen sulfide

DNA with lesion

2-iminobutanoate

2-iminopropanoate

2-iminosuccinate

N-acetyl-L-glutaminyl-L-glutamine amide

N-acetyl-L-glutaminyl-L-glutamine

γ-L-glutamyl-L-cysteine

D-alanyl-D-alanine

L-alanyl-γ-D-glutamyl-meso-diaminopimelate

L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanine

L-α-amino-ε-keto-pimelate

L-arginine

L-lysine

L-histidine

L-glutamate

D-glutamate

L-alanine

L-leucine

L-glutamine

glycine

L-proline

L-serine

β-alanine

L-tryptophan

L-valine

L-phenylalanine

L-isoleucine

L-methionine

L-selenocysteine

L-cysteine

L-threonine

L-aspartate

L-asparagine

L-aspartyl-4-phosphate

L-ornithine

L-tyrosine

L-cystathionine

L,L-diaminopimelate

N-carbamoyl-L-aspartate

N-acetyl-L-ornithine

N-acetyl-L-citrulline

L-citrulline

L-cystine

L-glutamate-5-semialdehyde

L-homocysteine

O-phospho-L-homoserine

S-adenosyl-L-homocysteine

S-adenosyl-L-methionine

L-homoserine

L-aspartate 4-semialdehyde

L-canaline

S-sulfo-L-cysteine

O-succinyl-L-homoserine

3-sulfino-L-alanine

meso-diaminopimelate

S-(4-hydroxy-nonenal-3-yl)-L-cysteine

L-selenomethionine

seleno-L-homocysteine

L-2-amino-3-oxobutanoate

L-proline betaine

O-acetyl-L-homoserine

N-acetyl-L-glutamate

N-acetyl-L-methionine

3-phospho-L-serine

D-alanine

D-aspartate

guanosine 2',3'-cyclic monophosphate

adenosine 2',3'-cyclic monophosphate

ADP

ATP

AMP

GDP

GMP

GTP

XMP

IMP

dADP

dATP

dGDP

dGTP

adenylo-succinate

hypoxanthine

XTP

ppGpp

pppGpp

dGMP

2'-deoxyguanosine

dIMP

dITP

1-(5-phospho-β-D-ribosyl)-AMP

1-(5-phospho-β-D-ribosyl)-ATP

dIDP

ITP

IDP

adenosine 3'-monophosphate

guanosine 3'-monophosphate

5'-deoxyadenosine

2'-deoxyadenosine

dAMP

NADP⁺

NAD⁺

NADPH

NADH

GDP-α-D-mannose

GDP-α-D-glucose

UDP-N-acetyl-α-D-muramoyl-L-alanine

UDP-N-acetyl-α-D-muramate

UDP-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanine

UDP-α-D-galactofuranose

UDP-N-acetyl-α-D-glucosamine-enolpyruvate

UDP-N-acetyl-α-D-muramoyl-L-alanyl-D-glutamate

UDP-α-D-glucose

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysine

UDP-α-D-galactose

UDP-N-acetyl-α-D-mannosamine

UDP-N-acetyl-α-D-glucosamine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimelate

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanine

adenine

guanine

uracil

preQ₁

cytidine-3'-monophosphate

uridine 3'-monophosphate

uridine 2'3'-cyclic monophosphate

cytidine 2',3'-cyclic monophosphate

dTMP

dUMP

dCMP

dTDP

dCDP

dUDP

dCTP

dUTP

dTTP

UDP

CDP

β-nicotinamide D-ribonucleotide

CTP

UTP

UMP

CMP

2'-deoxyuridine

2'-deoxycytidine

thymidine

guanosine

inosine

xanthosine

adenosine

uridine

cytidine

D-gluconate

1-(β-D ribofuranosyl)nicotinamide

decaprenyl-diphospho-N-acetylmuramoyl-pentapeptide

sucrose 6^F-phosphate

sucrose 6^G-phosphate

N-monoacetylchitobiose 6'-phosphate

N,N'-diacetylchitobiose 6'-phosphate

β-D-cellobiose 6'-phosphate

α,α-trehalose 6-phosphate

undecaprenyldiphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-L-lysyl- D-alanyl-D-alanine

undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-L-lysyl- D-alanine

a peptidoglycan dimer (E. faeciums)

a peptidoglycan dimer (S. aureus)

decaprenyl-pyrophosphoryl-(N-acetylglucosamine)-N-acetylmuramyl-(pentapeptide)

a peptidoglycan dimer (mycobacteria)

a peptidoglycan dimer (E. faecium, tetrapeptide)

GlcNAc-1,6-anhMurNAc-L-Ala-γ-D-Glu-DAP-D-Ala

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetyl-β-D-glucosaminyl)muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-[(N-acetyl-β-D-glucosaminyl)-(1,4)-]-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-isoglutaminyl-L-lysyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-isoglutaminyl-N-(β-D-asparatyl)-L-lysyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-isoglutaminyl-N-(β-D-asparaginyl)-L-lysyl-D-alanine

a peptidoglycan with D,D cross-links (meso-diaminopimelate containing)

a peptidoglycan dimer (meso-diaminopimelate containing)

a peptidoglycan with L,D cross-links (mycobacteria)

a peptidoglycan with D,D cross-links (mycobacteria)

a peptidoglycan tetramer with a D,D cross-link (Enterococcus faecium)

a peptidoglycan with D,D cross-link (S. aureus)

a peptidoglycan tetramer with an L,D cross-link (Enterococcus faecium)

methyl β-D-glucoside 6-phosphate

salicin 6-phosphate

arbutin-6-phosphate

5-phospho-α-D-ribose 1-diphosphate

D-erythrose 4-phosphate

D-sedoheptulose 7-phosphate

1-(o-carboxyphenylamino)-1'-deoxyribulose 5'-phosphate

4-phospho-D-erythronate

α-D-galactose 1-phosphate

α-D-glucopyranose 1-phosphate

α-D-mannose 1-phosphate

N-acetyl-α-D-glucosamine 1-phosphate

β-D-glucopyranose 1-phosphate

D-fructose 6-phosphate

β-D-fructofuranose 6-phosphate

L-ascorbate 6-phosphate

β-D-fructose 1,6-bisphosphate

β-D-glucose 6-phosphate

α-D-glucose 6-phosphate

β-D-mannopyranose 6-phosphate

α-D-mannopyranose 6-phosphate

α-D-ribose-1-phosphate

D-xylulose 5-phosphate

L-xylulose 5-phosphate

1-deoxy-D-xylulose 5-phosphate

aldehydo-D-ribose 5-phosphate

β-D-ribose 5-phosphate

α-D-ribose 5-phosphate

D-ribulose 5-phosphate

L-ribulose 5-phosphate

D-glyceraldehyde 3-phosphate

glycerol

galactitol

β-D-fructofuranose

L-glyceraldehyde

α-L-arabinopyranose

α-D-xylopyranose

aldehydo-D-ribose

β-D-ribopyranose

β-D-ribofuranose

α-D-ribofuranose

α-D-galactopyranose

β-D-galactopyranose

β-D-glucopyranose

α-D-glucopyranose

N-acetylmuramate

N-acetyl-α-D-muramoyl-L-alanine(1-)

N-acetyl-β-D-glucosamine

octyl β-1,6-D-galactofuranosyl-α-D-glucopyranoside

octyl α-D-glucopyranoside

sucrose

salicylaldehyde

trans,octacis-decaprenyl phosphate

mono-trans,octa-cis-decaprenyl diphosphate

(3S)-linalool

(3R)-linalool

geranyl diphosphate

1,2-dibutyrin

tributyrin

di-trans,octa-cis-undecaprenyl phosphate

di-trans,octa-cis-undecaprenyl diphosphate

all-trans-octaprenyl diphosphate

all-trans-heptaprenyl diphosphate

geranylgeranyl diphosphate

1-oleoyl-sn-glycerol 3-phosphate

1-C16:0-α,ω-dicarboxyl-2-lysophosphatidate

dioleoyl phosphatidate

phytol

propan-1-ol

ethanol

butan-1-ol

methanol

myo-inositol

1D-myo-inositol 2-monophosphate

1D-myo-inositol 6-monophosphate

1D-myo-inositol 5-monophosphate

1D-myo-inositol 4-monophosphate

1D-myo-inositol 3-monophosphate

1D-myo-inositol 1-monophosphate

hydroquinone

3,4-dihydroxyphenylacetate

3,4-dihydroxymandelate

3,4-dihydroxyphenylglycolaldehyde

3,4-dihydroxyphenylglycol

protocatechuate

(2E,6E)-farnesal

phytenal

(R)-lactaldehyde

(S)-lactaldehyde

acetaldehyde

1-octanal

isobutanal

1-propanal

butan-1-al

methylglyoxal

phenylacetaldehyde

(4-hydroxyphenyl)acetaldehyde

benzaldehyde

(R)-acetoin

diacetyl

Gro-P-ManNAc-GlcNAc-PP-undecaprenol

chorismate

D-glucarate

succinate

fumarate

pyruvate

glyoxylate

2-oxobutanoate

2-oxoglutarate

4-(methylsulfanyl)-2-oxobutanoate

5-chloro-4-hydroxy-2-oxopentanoate

3-(4-hydroxyphenyl)pyruvate

3-phenyl-2-oxopropanoate

salicylate

4-aminobenzoate

benzoate

acetate

orotate

L-carnitine

(R)-pantoate

5-chloro-5-deoxy-D-ribonate

(S)-1-pyrroline-5-carboxylate

butanoate

octanoate

phytenate

(2E,6E)-farnesoate

formate

(R)-lactate

(S)-lactate

4-tyrosol

4-methylphenol

3-demethylubiquinol-8

demethylmenaquinol-8

demethylmenaquinol-7

menaquinol-8

menaquinol-7

ubiquinol-8

indole

(indol-3-yl)acetaldehyde

(1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate

vanillyl mandelate

3-methoxy-4-hydroxyphenylglycol

preQ₀

(7,8-dihydropterin-6-yl)methyl diphosphate

7,8-dihydropteroate

7,8-dihydrofolate monoglutamate

tetrahydropteroyl tri-L-glutamate

5,6,7,8-tetrahydrofolate

(6S)-5-formyl-tetrahydrofolate mono-L-glutamate

5-methyltetrahydropteroyl tri-L-glutamate

5-methyltetrahydropteroyl mono-L-glutamate

10-formyl-tetrahydrofolate mono-L-glutamate

5,10-methylenetetrahydropteroyl mono-L-glutamate

FMN

FMNH₂

(R)-4-hydroxymandelate

(S)-4-hydroxymandelate

nicotinate

thiamine

nicotinamide

pyridoxamine 5'-phosphate

pyridoxal 5'-phosphate

pyridoxine 5'-phosphate

coenzyme A

(R)-lipoate

(R)-NADHX

(S)-NADHX

glycine betaine

D-glucono-1,5-lactone

acetyl-CoA

3'-dephospho-CoA

(3R,11Z,14Z,17Z)-3-hydroxyicosatrienoyl-CoA

(11Z,14Z,17Z)-3-oxoicosatrienoyl-CoA

(S)-3-hydroxy-3-methylglutaryl-CoA

malonyl-CoA

succinyl-CoA

oleoyl-CoA

acetoacetyl-CoA

hexadecanedioyl-CoA

(indol-3-yl)acetate

5-formamido-1-(5-phospho-D-ribosyl)-imidazole-4-carboxamide

5-amino-4-imidazolecarboxyamide

5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide

1-(5-phospho-β-D-ribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxamide

phosphoribulosylformimino-AICAR-phosphate

choline

spermine

putrescine

spermidine

N¹-acetylspermine

N-acetylputrescine

N¹-acetylspermidine

(2Z)-2-aminobut-2-enoate

2-aminoprop-2-enoate

glycerophosphoserine

glycerophosphoglycerol

sn-glycero-3-phosphoethanolamine

trimethyl sulfonium

sulfite

thiosulfate

hydrogensulfite

hydrogencarbonate

phosphonate

phosphate

trimetaphosphate

diphosphate

triphosphate

Cu²⁺

Mn²⁺

Zn²⁺

Cd²⁺

Mo²⁺

Na⁺

H⁺

ammonium

3-dimethylsulfoniopropionaldehyde

3-(methylsulfanyl)propanal

methionol

dimethyl sulfide

glutathione

3-sulfopyruvate

L-cysteate

2-(2-carboxy-4-methylthiazol-5-yl)ethyl phosphate

2-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate

4-methyl-5-(2-phosphooxyethyl)thiazole

5-(2-hydroxyethyl)-4-methylthiazole

methanethiol