Molecular formula
C18H21NO2
611 compounds have this formula on CompoundList.
- Molar mass
- 283.37g/mol
- Monoisotopic mass
- 283.1572Da
- Atoms
- 42
- Elements
- 4
- Rings plus double bonds
- 9
The formula C18H21NO2 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 2 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1876.30%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 217.47%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.94%14.007 × 1 = 14.007 g/mol
- O Oxygen × 211.29%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H21NO2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 611 compounds
2-(4-Ethylphenoxy)-N-(2-phenylethyl)acetamide
CAS 303796-42-1C18H21NO2
2-tert-Butyl-1,2,3,4-tetrahydroacridine-9-carboxylic acid
CAS 351000-76-5C18H21NO2
4-tert-Butyl-N-(2-methoxyphenyl)benzamide
CAS 129488-43-3C18H21NO2
2-Benzyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline
CAS 5267-52-7C18H21NO2
4-Isopropyl-N-(4-methoxybenzyl)benzamide
CAS 15089-21-1C18H21NO2
N-Benzyl-N-isopropyl-2-phenoxyacetamide
CAS 335204-09-6C18H21NO2
N-(4-Methoxybenzyl)-4-phenylbutanamide
CAS 430463-46-0C18H21NO2
3-Methoxy-N-(4-phenylbutan-2-yl)benzamide
CAS 432498-76-5C18H21NO2
N-Benzyl-N-hydroxy-5-phenylpentamide
CAS 158999-12-3C18H21NO2
2-(2,4-Dimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline
CAS 375831-25-7C18H21NO2
Coumarin 480 D dye content 99
CAS 171615-15-9C18H21NO2
N-(2-Methoxybenzyl)-3-phenylbutanamide
CAS 432510-89-9C18H21NO2
N-(1-Hydroxy-2-methylpropan-2-yl)-2,2-diphenylacetamide
CAS 108086-32-4C18H21NO2
N-(2-Methoxybenzyl)-4-phenylbutanamide
CAS 430462-80-9C18H21NO2
![N-[1-(4-Methoxyphenyl)ethyl]-3-phenylpropanamide chemical structure, C18H21NO2, CAS 199325-88-7](/s/KAXRUIICQCRWFA-UHFFFAOYSA-N.svg)
N-[1-(4-Methoxyphenyl)ethyl]-3-phenylpropanamide
CAS 199325-88-7C18H21NO2
N-Ethyl-N-(2-hydroxyethyl)-2,2-diphenylacetamide
CAS 378757-33-6C18H21NO2
2-(2-Methoxyphenyl)-N-(3-phenylpropyl)acetamide
CAS 435291-05-7C18H21NO2
2-(2-Ethylphenyl)-5,6-dimethyl-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione
CAS 314279-12-4C18H21NO2
1-Carbazol-9-yl-3-propan-2-yloxypropan-2-ol
CAS 424812-58-8C18H21NO2
N-Pentan-3-yl-2-phenoxybenzamide
CAS 349440-79-5C18H21NO2
N-(2,3-Dihydro-1,4-benzodioxin-2-ylmethyl)-3-phenyl-1-propanamine
CAS 87780-33-4C18H21NO2
4-tert-Butyl-N-(4-methoxyphenyl)benzamide
CAS 129488-38-6C18H21NO2
Acetamide, 2-(2,5-dimethylphenoxy)-N-(2,6-dimethylphenyl)-
CAS 83471-42-5C18H21NO2
![4-{[1-(2,5-Dimethylphenyl)ethyl]amino}-3-methylbenzoic acid chemical structure, C18H21NO2, CAS 1157325-19-3](/s/QRRAMXGTVIWMAF-UHFFFAOYSA-N.svg)
4-{[1-(2,5-Dimethylphenyl)ethyl]amino}-3-methylbenzoic acid
CAS 1157325-19-3C18H21NO2
- N-(1-(2,3-Dimethoxyphenyl)but-3-en-1-yl)aniline849035-15-0C18H21NO2
- 9-(2,2-Diethoxyethyl)-9H-carbazole74914-81-1C18H21NO2
- 3-(Furan-2-yl)-3-phenyl-1-piperidin-1-ylpropan-1-one384800-34-4C18H21NO2
- 3-(4-Ethylanilino)-1-(4-methoxyphenyl)-1-propanone477320-26-6C18H21NO2
- 4-Methoxy-N-(4-phenylbutyl)benzamide353467-31-9C18H21NO2
- N-Cyclohexyl-3-methoxynaphthalene-2-carboxamide794542-44-2C18H21NO2
- 3-(3,4-Dimethylanilino)-1-(4-methoxyphenyl)-1-propanone477319-10-1C18H21NO2
- N-Pentan-3-yl-3-phenoxybenzamide794579-07-0C18H21NO2
- N-Pentan-2-yl-3-phenoxybenzamide748144-69-6C18H21NO2
- 2-(2,5-Dimethylphenoxy)-N-(2,5-dimethylphenyl)acetamide315712-81-3C18H21NO2
- N-(3,4-Dimethylphenyl)-3-(2-methylphenoxy)propanamide750631-17-5C18H21NO2
- N-(2-Ethylphenyl)-3-(4-methoxyphenyl)propanamide541529-43-5C18H21NO2
- 2-(2,5-Dimethoxyphenyl)-5,6-dimethylisoindoline693822-65-0C18H21NO2
- N-[(1S,2S)-2-Hydroxy-1-methyl-2-phenylethyl]-N-methylbenzeneacetamide159213-05-5C18H21NO2
- Methylnaphthidate231299-82-4C18H21NO2
- 2-(2,4-Dimethylphenoxy)-N-(2,4-dimethylphenyl)acetamide448198-41-2C18H21NO2
- 1,7,7-Trimethyl-4-phenyl-3,4,6,8-tetrahydroquinoline-2,5-dione131447-60-4C18H21NO2
- 2-(2,5-Dimethylphenoxy)-N-(2,4-dimethylphenyl)acetamide315712-80-2C18H21NO2
- (1,2-Diphenyl-ethyl)-carbamic acid isopropyl ester305860-10-0C18H21NO2
- N-Benzyl-2-(4-isopropyl-phenoxy)-acetamide303990-93-4C18H21NO2
- Methyldesorphine16008-36-9C18H21NO2
- RefChem:19277513835-20-6C18H21NO2
- 4-Ethoxy-N-isopropyl-N-phenylbenzamide618443-29-1C18H21NO2
- 3-Phenyl-N-[4-(propan-2-yloxy)phenyl]propanamide450390-50-8C18H21NO2
- N-(2-Isopropylphenyl)-2-phenoxypropanamide335204-74-5C18H21NO2
- N-(1-Methoxypropan-2-yl)-2,2-diphenylacetamide525581-03-7C18H21NO2
- N-(4-Isopropylphenyl)-2-(4-methylphenoxy)acetamide303989-29-9C18H21NO2
- 1-[4-Acetyl-1-(3,4-dimethylphenyl)-2,5-dimethylpyrrol-3-yl]ethanone332059-51-5C18H21NO2
- 2-(4-Methoxyphenyl)-N-(4-propan-2-ylphenyl)acetamide332159-31-6C18H21NO2
- N-(4-sec-Butylphenyl)-3-methoxybenzamide346721-64-0C18H21NO2
- 4-tert-Butyl-N-(3-methoxyphenyl)benzamide5331-94-2C18H21NO2
- 2-[(2,5-Dimethoxyphenyl)methyl]-3,4-dihydro-1H-isoquinoline414887-60-8C18H21NO2
- 2-Ethoxy-N-[2-(propan-2-yl)phenyl]benzamide346725-76-6C18H21NO2
- 3-(5-Methylfuran-2-yl)-N-(1,2,3,4-tetrahydronaphthalen-2-yl)propanamide878694-70-3C18H21NO2
- Buflavine65762-70-1C18H21NO2
- 2-(2,3-Dimethylphenoxy)-N-phenethylacetamide303116-84-9C18H21NO2
- N-(4-Ethoxyphenyl)-4-propan-2-ylbenzamide432009-66-0C18H21NO2
- N-(2-Ethoxyphenyl)-4-propan-2-ylbenzamide546072-26-8C18H21NO2
- N-(2,3-Dimethylphenyl)-2-phenoxybutanamide353466-84-9C18H21NO2
- Beloxamide15256-58-3C18H21NO2
- Cyclohexanecarboxamide, N-(4-methoxy-1-naphthyl)-101564-22-1C18H21NO2
- 4-[4-(Benzyloxy)benzyl]morpholine294885-80-6C18H21NO2
- 3-Ethoxy-N-[2-(propan-2-yl)phenyl]benzamide433242-84-3C18H21NO2
- N-(2,5-Dimethylphenyl)-2-phenoxybutanamide353786-10-4C18H21NO2
- N-(2-Ethoxyphenyl)-3-phenylbutanamide431996-60-0C18H21NO2
- N-(2-Ethyl-6-methylphenyl)-2-(2-methoxyphenyl)acetamide348610-88-8C18H21NO2
- N-(2-Ethoxyphenyl)-4-phenylbutanamide430457-83-3C18H21NO2
- N-(2,3-Dimethylphenyl)-3-propoxybenzamide433687-34-4C18H21NO2
- 3-Hydroxy-N-(4-methylcyclohexyl)naphthalene-2-carboxamide1031152-08-5C18H21NO2
- N-(2-Phenoxyethyl)-4-phenylbutanamide1105208-70-5C18H21NO2
- 2-[4-(4-Methylphenyl)phenoxy]-N-propan-2-ylacetamide303031-92-7C18H21NO2
- N-(2,5-Dimethylphenyl)-3-(4-methoxyphenyl)propanamide438529-31-8C18H21NO2
- N-(3,5-Dimethylphenyl)-4-(propan-2-yloxy)benzamide431977-27-4C18H21NO2
- N-(2,3-Dimethylphenyl)-3-(propan-2-yloxy)benzamide433946-42-0C18H21NO2
- N-(2,6-Dimethylphenyl)-3-propan-2-yloxybenzamide433690-21-2C18H21NO2
- N-(2-Ethylphenyl)-4-(propan-2-yloxy)benzamide433693-46-0C18H21NO2
- N-(2,3-Dimethylphenyl)-4-(propan-2-yloxy)benzamide433953-78-7C18H21NO2
- N-(2,6-Dimethylphenyl)-4-(propan-2-yloxy)benzamide433971-08-5C18H21NO2
- Cyclobutanecarboxamide, N-(2-(7-methoxy-1-naphthalenyl)ethyl)-138113-13-0C18H21NO2
- 1-(N-Diphenylacetamido)-2-butanol130203-73-5C18H21NO2
- N-(2-Isopropylphenyl)-3-phenoxypropanamide304888-76-4C18H21NO2
- 4-(Piperidin-1-ylmethyl)-7,8-dihydrocyclopenta[g]chromen-2(6H)-one859860-64-3C18H21NO2
- N-(2-Methoxy-5-methylphenyl)-4-phenylbutanamide430452-34-9C18H21NO2
- N-(2,6-Dimethylphenyl)-3-propoxybenzamide433974-85-7C18H21NO2
- N-(2-Methoxy-5-methylphenyl)-2-phenylbutanamide433950-54-0C18H21NO2
- N-Cyclohexyl-7-methyl-1-benzoxepine-4-carboxamide1049128-10-0C18H21NO2
- N-((1-Hydroxycyclopentyl)methyl)-2-(naphthalen-1-yl)acetamide1235264-59-1C18H21NO2
- 6-(Cyclohexylmethyl)-4-hydroxy-3-phenylpyridin-2(1H)-one1614262-75-7C18H21NO2
- Methyl 3-(2-(methyl(phenylmethyl)amino)ethyl)benzoate51352-88-6C18H21NO2
- (5alpha)-7,8-Didehydro-4,5-epoxy-3-methoxy-17-methylmorphinan5121-66-4C18H21NO2
- 2-(2-Ethylphenoxy)-N-(2-ethylphenyl)acetamide449751-83-1C18H21NO2
- N-Cyclohexyl-8-methyl-1-benzoxepine-4-carboxamide1049128-81-5C18H21NO2
- 1-Phenyl-2-methyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline4008-69-9C18H21NO2
- Isoquinoline, 1,2,3,4-tetrahydro-6-methoxy-2-methyl-7-(phenylmethoxy)-15778-79-7C18H21NO2
- (11C)-Menet1097104-30-7C18H21NO2
- N-[2-Hydroxy-2-(naphthalen-1-yl)ethyl]cyclopentanecarboxamide1351631-42-9C18H21NO2
Frequently asked questions
What is the molar mass of C18H21NO2?
The molar mass of C18H21NO2 is 283.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 2 oxygen atoms. The monoisotopic mass is 283.1572 Da.
How many compounds have the formula C18H21NO2?
CompoundList lists 611 compounds with the molecular formula C18H21NO2, including 2-(4-Ethylphenoxy)-N-(2-phenylethyl)acetamide, 2-tert-Butyl-1,2,3,4-tetrahydroacridine-9-carboxylic acid, 4-tert-Butyl-N-(2-methoxyphenyl)benzamide. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C18H21NO2?
C18H21NO2 has a degree of unsaturation of 9. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.