Chemical Structures Starting with the Letter E

by Anne Marie Helmenstine, Ph.D.
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
Updated March 06, 2017
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Eburnamenine

This is the chemical structure of eburnamenine.
This is the chemical structure of eburnamenine. Todd Helmenstine

Browse structures of molecules and ions that have names beginning with the letter E.

The molecular formula for eburnamenine is C19H22N2.

02
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Ephedrine

Ephedrine
Ephedrine or (1R,2S)-2-(methylamino)-1-phenylpropan-1-ol is a drug which is used as a stimulant, appetite suppressant, and decongestant. Anne Helmenstine

The molecular formula for ephedrine is C10H15NO.

03
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Epinephrine - Adrenaline

Epinephrine or Adrenaline
Epinephrine or Adrenaline - hormone and neurotransmitter. Its IUPAC name is (R)-4-(1-hydroxy- 2-(methylamino)ethyl)benzene-1,2-diol. Cacycle, wikipedia commons

The molecular formula for epinephrine is C9H13NO3.

04
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Emetan

Emetan chemical structure
Emetan Chemical Structure. Todd Helmenstine

The molecular formula for emetan is C25H32N2.

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Ergoline Chemical Structure

This is the chemical structure of ergoline.
This is the chemical structure of ergoline. Todd Helmenstine

The molecular formula for ergoline is C14H16N.

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Ergotaman Chemical Structure

ergotaman chemical structure
ergotaman chemical structure. Todd Helmenstine

The molecular formula for ergotaman is C25H33N5O.

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Erythrianan Chemical Structure

erythrianan chemical structure
erythrianan chemical structure. Todd Helmenstine

The molecular formula for erythrianan is C16H21N.

08
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Esarine

This is the chemical structure of physostigmine.
This is the chemical structure of physostigmine. Todd Helmenstine

The molecular formula for physostigmine or esarine is C15H21N3O2.

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Estradiol

Estradiol is one form of the class of steroid hormones known as estrogens.
Estradiol is one form of the class of steroid hormones known as estrogens. Anne Helmenstine
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Estriol

Estriol is one form of estrogen.
Estriol is one form of estrogen. Anne Helmenstine

The molecular formula for estriol is C18H24O3.

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Estrone

Estrone is one form of estrogen.
Estrone is one form of estrogen. This steroid hormone is characterized by having a ketone (=O) group attached to the D ring. Anne Helmenstine

The molecular formula for estrone is C18H22O2.

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Ethane

Ethane also is called dimethyl, ethyl hydride, or methylmethane.
Ethane also is called dimethyl, ethyl hydride, or methylmethane. Ben Mills

The molecular formula of ethane is C2H6.

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Ethanol

Ethanol is ethyl alcohol, sometimes known as grain alcohol.
Ethanol is ethyl alcohol, sometimes known as grain alcohol. Ben Mills

The chemical formula for ethanol is CH3CH2OH.

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6-14-ethenomorphinan

6, 14-ethenomorphinan chemical structure
6, 14-ethenomorphinan chemical structure. Todd Helmenstine
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Ethylbenzene

This is the chemical structure of ethylbenzene.
This is the chemical structure of ethylbenzene. Todd Helmenstine

The molecular formula for ethylbenzene is C8H10.

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Ethylene Chemical Structure

This is the chemical structure of ethene, also known as ethylene.
This is the chemical structure of ethene, also known as ethylene. Todd Helmenstine

The molecular formula for ethylene is C2H4.

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Xylene

These chemical structures show the difference between ortho-, meta- and para-xylene.
These chemical structures show the difference between ortho-, meta- and para-xylene. Todd Helmenstine
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Ether Functional Group

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Ethylene Glycol

Ethylene glycol is commonly used as antifreeze.
Ethylene glycol is an alcohol that is also known as monoethylene glycol (MEG), 1,2-ethanediol, or ethane-1,2-diol. Ethylene glycol is commonly used as antifreeze. Cacycle, Wikipedia Commons

The molecular formula of ethylene glycol is C2H4(OH)2.

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Ethylene Dichloride (EDC) - 1,2-Dichloroethane

This is the chemical structure of ethylene dichloride (EDC) or 1,2-dichloroethane.
This is the chemical structure of ethylene dichloride (EDC) or 1,2-dichloroethane. Armtuk/PD

The molecular formula for ethylene dichloride (EDC) is C2H4Cl2.

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EDTA - Ethylenediamine-N,N,N',N'-tetraacetic Acid

This is the chemical structure of EDTA or ethylenediamine-N,N,N',N'-tetraacetic acid.
This is the chemical structure of EDTA or ethylenediamine-N,N,N',N'-tetraacetic acid. Shaddack/PD

The molecular formula for EDTA is C10H16N2O8.

22
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Ecstasy - MDMA (Methylenedioxymethamphetamine)

MDMA (3,4-methylenedioxy-N-methylamphetamine) is most commonly known by the street name Ecstasy.
MDMA (3,4-methylenedioxy-N-methylamphetamine) is most commonly known by the street name Ecstasy (E, X, or XTC). It is a member of the phenethylamine class of psychoactive drugs. Halfdan, Wikipedia Commons

The molecular formula for methylenedioxymethamphetamine is C11H15NO2.

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Eicosane

This is the chemical structure of eicosane.
This is the chemical structure of eicosane. Edgar181/PD

The molecular formula for eicosane is C20H42.

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Endosulfan

This is the chemical structure of endosulfan.
This is the chemical structure of endosulfan. NEUROtiker/PD

The molecular formula for endosulfan is C9H6Cl6O3S.

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Endrin

This is the chemical structure of endrin.
This is the chemical structure of endrin. NEUROtiker/PD

The molecular formula for endrin is C12H8Cl6O.

26
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Eosin B

This is the chemical structure of eosin B.
This is the chemical structure of eosin B. Shaddack/PD

The molecular formula for eosin B is C20H8Br2N2O9.

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Eosin Y

This is the chemical structure of eosin Y.
This is the chemical structure of eosin Y. Shaddack/PD

The molecular formula for eosin Y is C20H8Br4O5.

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Epibromohydrin

This is the chemical structure of epibromohydrin.
This is the chemical structure of epibromohydrin. Todd Helmenstine

The molecular formula for epibromohydrin is C3H5BrO.

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Erucic Acid

This is the chemical structure of erucic acid.
This is the chemical structure of erucic acid. Edgar181/PD

The molecular formula for erucic acid is C22H42O.

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Erythritol

This is the chemical structure of erythritol.
This is the chemical structure of erythritol. Su-no-G/PD

The molecular formula for erythritol is C4H10O4.

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Ethacridine Lactate

This is the chemical structure of ethacridine lactate.
This is the chemical structure of ethacridine lactate. Alcibiades/PD

The molecular formula for ethacridine lactate is C18H21N3O4.

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Acetaldehyde or Ethanal Structure

This is the two-dimensional molecular structure of acetaldehyde or ethanal.
This is the two-dimensional molecular structure of acetaldehyde or ethanal, a flammable organic chemical compound. Acetaldehyde is also known as acetic aldehyde or ethyl aldehyde. Ben Mills

The molecular formula of acetaldehyde or ethanal is C2H4O.

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Ethane

This is the chemical structure of ethane.
This is the chemical structure of ethane. Todd Helmenstine

The molecular formula for ethane is C2H6.

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Ethanol

This is the chemical structure of ethanol.
This is the chemical structure of ethanol. Benjah-bmm27/PD

The molecular formula for ethanol is C2H6O.

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1,2-Ethanedithiol

This is the chemical structure of 1,2-ethanedithiol.
This is the chemical structure of 1,2-ethanedithiol. Edgar181/PD

The molecular formula for ethanedithiol is C2H6S2.

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Ethene or Ethylene

This is the chemical structure of ethene, also known as ethylene.
This is the chemical structure of ethene, also known as ethylene. Todd Helmenstine

The molecular formula for ethene is C2H4.

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Ethanedioic Acid - Oxalic Acid

This is the chemical structure of oxalic acid.
This is the chemical structure of oxalic acid. Smokefoot/PD

The molecular formula for ethanedioic acid, also known as oxalic acid, is C2H2O4.

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Ethanoic Acid - Acetic Acid

Acetic acid is also known as ethanoic acid.
Acetic acid is also known as ethanoic acid. Cacycle, Wikipedia Commons

The molecular formula for ethanoic acid is C2H4O2.

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Ethenone

This is the chemical structure of ethenone.
This is the chemical structure of ethenone. Todd Helmenstine

The molecular formula for ethenone is C2H2O.

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Ethidium Bromide

This is the chemical structure of ethidium bromide.
This is the chemical structure of ethidium bromide. Todd Helmenstine

The molecular formula for ethidium bromide is C21H20BrN3.

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Ethyl Acetate

This is the chemical structure of ethyl acetate.
This is the chemical structure of ethyl acetate. Benjah-bmm27/PD

The molecular formula for ethyl acetate is C4H8O2.

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Ethylamine

This is the chemical structure of ethylamine.
This is the chemical structure of ethylamine. Benjah-bmm27/PD

The molecular formula for ethylamine is C2H7N.

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Ethyl 4-Aminobenzoate

This is the chemical structure of benzocaine.
This is the chemical structure of benzocaine. Techelf/PD

The molecular formula for benzocaine is C9H11NO2.

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Ethyl Chloride - Chloroethane

This is the chemical structure of chloroethane.
This is the chemical structure of chloroethane. Benjah-bmm27/PD

The molecular formula for chloroethane is C2H5Cl.

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Ethylene Oxide - Oxirane

This is the chemical structure of oxirane.
This is the chemical structure of oxirane. Todd Helmenstine

The molecular formula for oxirane is C2H4O.

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Ethyl Formate

This is the chemical structure of ethyl formate.
This is the chemical structure of ethyl formate. Ben Mills/PD

The molecular formula for ethyl formate is C3H6O2.

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2-Ethyl-1-Hexanol - Isooctyl Alcohol

This is the chemical structure of 2-ethyl-1-hexanol.
This is the chemical structure of 2-ethyl-1-hexanol. Todd Helmenstine

The molecular formula for 2-ethyl-1-hexanol is C8H18O.

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Ethynol

This is the chemical structure of ethynol.
This is the chemical structure of ethynol. Yikrazuul/PD

The molecular formula for ethynol is C2H2O.

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Eugenol

This is the chemical structure of eugenol.
This is the chemical structure of eugenol. Calvero/PD

The molecular formula for eugenol is C10H12O2.

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Ethaneperoxoic Acid - Peracetic Acid Chemical Structure

This is the chemical structure of peracetic acid, also known as peroxyacetic acid and ethaneperoxoic
This is the chemical structure of peracetic acid, also known as peroxyacetic acid and ethaneperoxoic acid. Edgar181/PD

The molecular formula for ethaneperoxoic acid is C2H4O3. Peracetic acid is also known as peroxyacetic acid and peracetic acid.

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Ethyl Carbamate - Urethane Chemical Structure

This is the chemical structure of ethyl carbamate, also known as urethane.
This is the chemical structure of ethyl carbamate, also known as urethane. Ben Mills/PD

The molecular formula for ethyl carbamate is C3H7O2.

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Ethenyl Functional Group Chemical Structure

This is the chemical structure of the vinyl functional group.
Functional Groups This is the chemical structure of the vinyl or ethenyl functional group. Todd Helmenstine

The molecular formula for the ethenyl functional group is C2H3. It is also known as the vinyl functional group.

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Ethyl Functional Group Chemical Structure

This is the chemical structure of the ethyl functional group.
Functional Groups This is the chemical structure of the ethyl functional group. Todd Helmenstine

The molecular formula for the ethyl functional group is C2H5.

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Ergotamine Chemical Structure

This is the chemical structure of ergotamine.
This is the chemical structure of ergotamine. Todd Helmenstine

The molecular formula for ergotamine is C33H35N5O5.

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Ethyl Glyoxylate Chemical Structure

This is the chemical structure of ethyl glyoxylate.
This is the chemical structure of ethyl glyoxylate. Todd Helmenstine

The molecular formula for ethyl glyoxylate is C4H6O3.

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Ethyl 3-Oxohexanoate Chemical Structure

This is the chemical structure of ethyl 3-oxohexanoate.
This is the chemical structure of ethyl 3-oxohexanoate. Todd Helmenstine

The molecular formula for ethyl 3-oxohexanoate is C8H14O3.

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Ethyl Mandelate Chemical Structure

This is the chemical structure of ethyl mandelate.
This is the chemical structure of ethyl mandelate. Todd Helmenstine

The molecular formula for ethyl mandelate is C10H12O3.

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Ethyl Propiolate Chemical Structure

This is the chemical structure of ethyl propiolate.
This is the chemical structure of ethyl propiolate. Todd Helmenstine

The molecular formula for ethyl propiolate is C5H6O2.

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Ethyl 2-Cyanopropionate Chemical Structure

This is the chemical structure of ethyl 2-cyanopropionate.
This is the chemical structure of ethyl 2-cyanopropionate. Todd Helmenstine

The molecular formula for ethyl 2-cyanopropionate is C6H9NO2.

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Ethyl 2-Cyanoacetoacetate Chemical Structure

This is the chemical structure of ethyl 2-cyanoacetoacetate.
This is the chemical structure of ethyl 2-cyanoacetoacetate. Todd Helmenstine

The molecular formula for ethyl 2-cyanoacetoacetate is C7H9NO3.

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Encainide Chemical Structure

This is the chemical structure of encainide.
This is the chemical structure of encainide. Todd Helmenstine

The molecular formula for encainide is C22H28N2O2.

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Etorphine Chemical Structure

This is the chemical structure of etorphine.
This is the chemical structure of etorphine. Todd Helmenstine

The molecular formula for etorphine is C25H33NO4.

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Ethane Chemical Structure

This is the ball and stick model of the ethane molecule.
Simple Alkane Chain This is the ball and stick model of the ethane molecule. Todd Helmenstine

The molecular formula for ethane is C2H6.

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Ethyne Chemical Structure

This is the chemical structure of ethyne.
Simple Alkyne This is the chemical structure of ethyne. Todd Helmenstine

The molecular formula for ethyne is C2H2.

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Ethene Chemical Structure

This is the ball and stick model of the chemical structure of ethene.
This is the ball and stick model of the chemical structure of ethene. Todd Helmenstine

The molecular formula for ethene is C2H4.

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Ethylenediamine Chemical Structure

This is the chemical structure of ethylenediamine.
This is the chemical structure of ethylenediamine. Todd Helmenstine

The chemical formula for ethylenediamine is C2H4(NH2)2.

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Esomeprazole or Nexium

This is the molecular structure of Esomeprazole (Nexium).
This is the molecular structure of Esomeprazole (Nexium), a proton pump inhibitor drug that prevents formation of gastric acid. public domain

The IUPAC name for Esomeprazole is (S)-5-methoxy-2-[(4-methoxy-3,5-dimethylpyridin-2-yl) methylsulfinyl]-3H-benzoimidazole. It has the formula C17H19N3O3S.

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Vitamin E

Vitamin E or Tocopherol
Vitamin E or Tocopherol. Dr. A.M. Helmenstine
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Ester Functional Group

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2-Ethylhexanol Chemical Structure

This is the chemical structure of 2-ethylhexanol.
This is the chemical structure of 2-ethylhexanol. Slashme/PD

The molecular formula for 2-ethylhexanol is C8H18O.