Molecular formula
C18H21N3O3
343 compounds have this formula on CompoundList.
- Molar mass
- 327.38g/mol
- Monoisotopic mass
- 327.1583Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 10
The formula C18H21N3O3 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 3 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 × 1866.04%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.47%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 312.84%14.007 × 3 = 42.021 g/mol
- O Oxygen × 314.66%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H21N3O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 300 of 343 compounds
2-(2-Methoxyphenyl)-1-(3-(pyridazin-3-yloxy)piperidin-1-yl)ethanone
CAS 2034501-63-6C18H21N3O3
2-(Benzyloxy)-1-(3-(pyridazin-3-yloxy)piperidin-1-yl)ethanone
CAS 2034225-48-2C18H21N3O3
(2-Methoxyphenyl)(3-((6-methylpyridazin-3-yl)oxy)piperidin-1-yl)methanone
CAS 2034481-10-0C18H21N3O3
1-(3-(Pyrazin-2-yloxy)piperidin-1-yl)-2-(p-tolyloxy)ethanone
CAS 2034473-65-7C18H21N3O3
2-(Benzyloxy)-1-(3-(pyrazin-2-yloxy)piperidin-1-yl)ethanone
CAS 2034228-06-1C18H21N3O3
1-(3-((3-Methoxypyrazin-2-yl)oxy)piperidin-1-yl)-2-phenylethanone
CAS 2034479-14-4C18H21N3O3
5-Cyclopropyl-N-(pyridin-3-yl(tetrahydro-2H-pyran-4-yl)methyl)isoxazole-3-carboxamide
CAS 2034259-08-8C18H21N3O3
2-Methoxy-N-(pyridin-3-yl(tetrahydro-2H-pyran-4-yl)methyl)nicotinamide
CAS 2034406-60-3C18H21N3O3
N-(2-Methyl-3-oxo-2,3,5,6,7,8-hexahydrocinnolin-6-yl)-2-(m-tolyloxy)acetamide
CAS 2034416-05-0C18H21N3O3
N-(4-Methylpyridin-3-yl)-6-((tetrahydro-2H-pyran-4-yl)methoxy)nicotinamide
CAS 2034279-25-7C18H21N3O3
![1-Acetyl-N-{[6-(furan-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide chemical structure, C18H21N3O3, CAS 2034394-72-2](/s/QCLVUHPQQJMUNY-UHFFFAOYSA-N.svg)
1-Acetyl-N-{[6-(furan-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide
CAS 2034394-72-2C18H21N3O3
N-(2-(Pyridin-4-yl)ethyl)-6-((tetrahydro-2H-pyran-4-yl)oxy)nicotinamide
CAS 1903337-31-4C18H21N3O3
N-(3-Methylpyridin-2-yl)-6-((tetrahydro-2H-pyran-4-yl)methoxy)nicotinamide
CAS 2034241-68-2C18H21N3O3
N-(6-Methylpyridin-2-yl)-6-((tetrahydro-2H-pyran-4-yl)methoxy)nicotinamide
CAS 2034278-62-9C18H21N3O3
![(3-((5-Methylpyridin-2-yl)oxy)pyrrolidin-1-yl)(4,5,6,7-tetrahydrobenzo[d]isoxazol-3-yl)methanone chemical structure, C18H21N3O3, CAS 1903828-32-9](/s/BIKLEXHQPRSEGF-UHFFFAOYSA-N.svg)
(3-((5-Methylpyridin-2-yl)oxy)pyrrolidin-1-yl)(4,5,6,7-tetrahydrobenzo[d]isoxazol-3-yl)methanone
CAS 1903828-32-9C18H21N3O3
(E)-1-(4-((2,6-Dimethylpyrimidin-4-yl)oxy)piperidin-1-yl)-3-(furan-2-yl)prop-2-en-1-one
CAS 2035001-35-3C18H21N3O3
3-(1-(Tetrahydrofuran-3-carbonyl)piperidin-3-yl)quinazolin-4(3H)-one
CAS 2034296-81-4C18H21N3O3
1-Acetyl-N-((6-(furan-3-yl)pyridin-3-yl)methyl)piperidine-4-carboxamide
CAS 2034226-92-9C18H21N3O3
N-(4-Methylpyridin-3-yl)-2-((tetrahydro-2H-pyran-4-yl)methoxy)isonicotinamide
CAS 2034297-38-4C18H21N3O3
![Methyl 2-[3-(1-methyl-1H-pyrazol-3-yl)piperidine-1-carbonyl]benzoate chemical structure, C18H21N3O3, CAS 2034304-15-7](/s/QYKIPSXLJUWVAV-UHFFFAOYSA-N.svg)
Methyl 2-[3-(1-methyl-1H-pyrazol-3-yl)piperidine-1-carbonyl]benzoate
CAS 2034304-15-7C18H21N3O3
![N-(2-(1-Ethyl-7-oxo-1H-pyrrolo[2,3-c]pyridin-6(7H)-yl)ethyl)-2,5-dimethylfuran-3-carboxamide chemical structure, C18H21N3O3, CAS 2034559-74-3](/s/FBFYRJBGJMBAAD-UHFFFAOYSA-N.svg)
N-(2-(1-Ethyl-7-oxo-1H-pyrrolo[2,3-c]pyridin-6(7H)-yl)ethyl)-2,5-dimethylfuran-3-carboxamide
CAS 2034559-74-3C18H21N3O3
![1-Acetyl-N-{[5-(furan-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide chemical structure, C18H21N3O3, CAS 2034612-46-7](/s/HBAIQYVMMGRXFW-UHFFFAOYSA-N.svg)
1-Acetyl-N-{[5-(furan-2-yl)pyridin-3-yl]methyl}piperidine-4-carboxamide
CAS 2034612-46-7C18H21N3O3
N-(2-(4-Cyclopropyl-6-oxopyrimidin-1(6H)-yl)ethyl)-4-ethoxybenzamide
CAS 2034589-58-5C18H21N3O3
1,6-Dimethyl-4-((1-picolinoylpiperidin-4-yl)oxy)pyridin-2(1H)-one
CAS 2309214-63-7C18H21N3O3
- 2-Ethoxy-N-(2-(3-oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)benzamide2034308-02-4C18H21N3O3
- 1-(3-(Pyrimidin-2-yloxy)piperidin-1-yl)-2-(m-tolyloxy)ethanone2034435-24-8C18H21N3O3
- 2-(2-Methoxyphenyl)-1-(3-(pyrimidin-2-yloxy)piperidin-1-yl)ethanone2034278-50-5C18H21N3O3
- 2-(Benzyloxy)-1-(3-(pyrimidin-2-yloxy)piperidin-1-yl)ethanone2034325-53-4C18H21N3O3
- 1-(3-(Pyrimidin-4-yloxy)piperidin-1-yl)-2-(o-tolyloxy)ethanone2034580-34-0C18H21N3O3
- 2-(Benzyloxy)-1-(3-(pyrimidin-4-yloxy)piperidin-1-yl)ethanone2034332-66-4C18H21N3O3
- 3-(4-Methoxyphenyl)-1-[3-(pyrimidin-2-yloxy)pyrrolidin-1-yl]propan-1-one2034251-07-3C18H21N3O3
- 2-(4-Methoxy-3-methylphenyl)-1-(3-(pyrimidin-2-yloxy)pyrrolidin-1-yl)ethanone2034302-30-0C18H21N3O3
- 1-(3-((2-Methylpyrimidin-4-yl)oxy)pyrrolidin-1-yl)-2-(m-tolyloxy)ethanone2034523-45-8C18H21N3O3
- Benzyl 3-((2-methylpyrimidin-4-yl)oxy)piperidine-1-carboxylate2034401-20-0C18H21N3O3
- N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-2-(o-tolyloxy)acetamide2034366-72-6C18H21N3O3
- N-(2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)ethyl)-2-(2-methoxyphenyl)acetamide2034563-39-6C18H21N3O3
- 2-(4-Oxoquinazolin-3(4H)-yl)-N-(7-oxaspiro[3.5]nonan-1-yl)acetamide2320178-27-4C18H21N3O3
- N-(4-Methoxy-2-methylphenyl)-2-(3-oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)propanamide2097900-37-1C18H21N3O3
- 2-(Benzyloxy)-N-(2-(3-oxo-3,5,6,7-tetrahydro-2H-cyclopenta[c]pyridazin-2-yl)ethyl)acetamide2097859-27-1C18H21N3O3
- 1-(2,3-Dihydro-1,4-benzodioxine-2-carbonyl)-2-(1-methyl-1H-pyrazol-4-yl)piperidine2097913-41-0C18H21N3O3
- 2-(2H-1,3-Benzodioxol-5-yl)-1-[3-(1-methyl-1H-pyrazol-4-yl)piperidin-1-yl]ethan-1-one2309309-95-1C18H21N3O3
- 1-Cyclopentyl-4-(3-hydroxy-4-methoxyphenyl)-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one1310934-75-8C18H21N3O3
- 1-Cyclopentyl-4-(4-hydroxy-3-methoxyphenyl)-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one1310940-17-0C18H21N3O3
- 3-[2-[2-(1,3-Dimethylpyrazol-4-yl)pyrrolidin-1-yl]-2-oxoethoxy]benzaldehyde2224202-71-3C18H21N3O3
- 2-{3-[3-(But-3-yn-1-yl)-3H-diazirin-3-yl]propanamido}-2-(3,4-dimethylphenyl)acetic acid2220171-82-2C18H21N3O3
- 1-(4-Acrylamidobenzoyl)-N-cyclopropylpyrrolidine-2-carboxamide2361677-01-0C18H21N3O3
- L-Phenylalaninamide, L-tyrosyl-38678-75-0C18H21N3O3
- 2-{Bis[(furan-2-yl)methyl]amino}-N-(1-cyanocyclopentyl)acetamide941179-50-6C18H21N3O3
- 2-{4-[(4-Methoxyphenyl)methyl]piperazin-1-yl}pyridine-3-carboxylic acid247117-88-0C18H21N3O3
- 5-[(3S)-3-Amino-3,4-dihydro-2H-1-benzopyran-5-yl]-2-methoxy-N,N-dimethyl-3-pyridinecarboxamide1072854-98-8C18H21N3O3
- 5-({[2-Hydroxy-2-(3-hydroxyphenyl)ethyl]amino}methyl)-1,3-dimethyl-1,3-dihydro-2H-benzimidazol-2-one1260729-10-9C18H21N3O3
- N-(4-Methoxyphenyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide1282126-97-9C18H21N3O3
- N-(2-Methoxyphenyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide1282141-85-8C18H21N3O3
- N-(Cyanomethyl)-3-[5-(4-methoxyphenyl)-1,3-oxazol-2-yl]-N-propylpropanamide1280799-13-4C18H21N3O3
- N-(1-Cyanocyclobutyl)-1-[(4-methoxyphenyl)methyl]-5-oxopyrrolidine-3-carboxamide1311802-52-4C18H21N3O3
- N-(1-Cyano-1,3-dimethylbutyl)-3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanamide1311643-70-5C18H21N3O3
- [4-(3-Amino-benzoylamino)-phenyl]-carbamic acid t-butyl ester1098068-23-5C18H21N3O3
- 4-((3-(4-Methylpiperazin-1-yl)pyridin-2-yl)methoxy)benzoic acid1126370-06-6C18H21N3O3
- N-[(4-tert-Butylphenyl)(cyano)methyl]-5-(methoxymethyl)-1,2-oxazole-3-carboxamide1384625-19-7C18H21N3O3
- 5-Cyclopropyl-N-(4-(3-methoxypyrrolidin-1-yl)phenyl)isoxazole-3-carboxamide1797641-00-9C18H21N3O3
- N-(2-Methoxy-5-methylphenyl)-2-methyl-3-oxo-2,3,5,6,7,8-hexahydrocinnoline-6-carboxamide1903522-64-4C18H21N3O3
- 1-[(5-Cyclopropylpyridin-3-yl)methyl]-3-(2,3-dimethoxyphenyl)urea2034313-40-9C18H21N3O3
- 4-[3-(2,3-Dihydro-1-benzofuran-5-yl)pyrrolidine-1-carbonyl]-3-methoxy-1-methyl-1H-pyrazole2097896-38-1C18H21N3O3
- 2-{[1-(Oxane-4-carbonyl)pyrrolidin-3-yl]oxy}quinoxaline2097930-41-9C18H21N3O3
- 6-[5-Butanoyl-6-(morpholin-4-yl)pyrimidin-2(1H)-ylidene]cyclohexa-2,4-dien-1-one823792-98-9C18H21N3O3
- 4-[2-Oxo-2-(4-prop-2-ynyl-1,4-diazepan-1-yl)ethyl]-1,4-benzoxazin-3-one2249388-33-6C18H21N3O3
- N-({4-[3-(Cyclopropylmethyl)-4-oxoimidazolidine-1-carbonyl]phenyl}methyl)prop-2-enamide2201462-82-8C18H21N3O3
- Methyl (E)-4-[4-(dimethylamino)-N-(1H-pyrrol-2-ylmethyl)anilino]-4-oxobut-2-enoate2411327-20-1C18H21N3O3
- Methyl (E)-4-[N-[(1-ethyl-3-methylpyrazol-4-yl)methyl]anilino]-4-oxobut-2-enoate2411334-81-9C18H21N3O3
- N-Cyclopentyl-4-methoxy-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxamide1002254-61-6C18H21N3O3
- 1,3,5-Tris(2-isocyanatopropan-2-yl)benzene87498-87-1C18H21N3O3
- 3-(3,4-Dimethoxyphenyl)-2-(methoxymethyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine948009-87-8C18H21N3O3
- 2-(Methoxymethyl)-3-(4-methoxyphenyl)-5-propylpyrazolo[1,5-a]pyrimidin-7(4H)-one948240-06-0C18H21N3O3
- 4,4',4''-[Benzene-1,3,5-triyltris(oxy)]tributanenitrile547770-76-3C18H21N3O3
- 4-(4-Hydroxyphenyl)-N-(6-methoxypyridin-3-yl)piperidine-1-carboxamide1325504-17-3C18H21N3O3
- 1-[2-(3,5-Dimethylphenoxy)propanoylamino]-3-phenylurea895463-39-5C18H21N3O3
- [4-(2-Amino-benzoylamino)-phenyl]-carbamic acid tert-butyl ester1043962-26-0C18H21N3O3
- tert-Butyl 5-cyano-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate1159094-07-1C18H21N3O3
- Methyl 3-(4-(5-carbamimidoylpyridin-2-yl)phenoxy)-2,2-dimethylpropanoate1382998-78-8C18H21N3O3
- Methyl 3-(2-(2-morpholinopyrimidin-5-yl)ethyl)benzoate1400760-47-5C18H21N3O3
- 1-(1-((5-(Hydroxymethyl)furan-2-yl)methyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one127411-51-2C18H21N3O3
- tert-Butyl (2-methyl-5-(pyridin-2-ylcarbamoyl)phenyl)carbamate1268349-11-6C18H21N3O3
- 3-Ethoxy-N-[(furan-2-yl)methyl]-2-propyl-2H-indazole-6-carboxamide919108-00-2C18H21N3O3
- 2-Butyl-N-[(furan-2-yl)methyl]-3-methoxy-2H-indazole-6-carboxamide919107-00-9C18H21N3O3
- Peficitinib impurity 10944118-24-5C18H21N3O3
- 4-Amino-N-benzyl-N-(tetrahydro-2H-pyran-2-yloxy)pyridine-2-carboxamide1431470-14-2C18H21N3O3
- Ethyl 3-[[4-(3-aminophenyl)-1-oxobutyl]amino]-4-pyridinecarboxylate1461603-51-9C18H21N3O3
- N-[Cyano(2-methoxyphenyl)methyl]-4-methyl-2-(2-methylpropyl)-1,3-oxazole-5-carboxamide1808555-05-6C18H21N3O3
- Benzyl 2-cyclopropyl-3-(hydroxymethyl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-7-carboxylate2059967-02-9C18H21N3O3
- Benzyl 2-{[6-(oxan-4-yl)pyrimidin-4-yl]amino}acetate2098029-92-4C18H21N3O3
- Ethyl 4-(4-benzylmorpholin-2-yl)pyrimidine-5-carboxylate2177257-44-0C18H21N3O3
- 3-[1,3-Dihydro-1-oxo-4-(4-piperidinyl)-2H-isoindol-2-yl]-2,6-piperidinedione2154356-84-8C18H21N3O3
- 2-Methoxy-3-{3-[(pyridin-4-yloxy)methyl]piperidine-1-carbonyl}pyridine2379978-71-7C18H21N3O3
- 1-{4-[(5-Methylpyrimidin-2-yl)oxy]piperidin-1-yl}-2-phenoxyethan-1-one2379985-13-2C18H21N3O3
- Methyl 4-[3-(1-methylpyrazol-4-yl)piperidine-1-carbonyl]benzoate2319856-26-1C18H21N3O3
- 1-(2,3-Dihydro-1,4-benzodioxine-2-carbonyl)-4-(1-methyl-1H-imidazol-5-yl)piperidine2320518-89-4C18H21N3O3
- 2-(2H-1,3-Benzodioxol-5-yl)-1-[2-(1-methyl-1H-pyrazol-5-yl)piperidin-1-yl]ethan-1-one2310141-89-8C18H21N3O3
- 6-Methyl-2-({1-[2-(2-methylphenoxy)acetyl]azetidin-3-yl}methyl)-2,3-dihydropyridazin-3-one2319809-42-0C18H21N3O3
- 6-Methyl-2-{[1-(2-phenoxypropanoyl)azetidin-3-yl]methyl}-2,3-dihydropyridazin-3-one2320377-86-2C18H21N3O3
- 6-Methyl-2-({1-[2-(3-methylphenoxy)acetyl]azetidin-3-yl}methyl)-2,3-dihydropyridazin-3-one2309734-08-3C18H21N3O3
Frequently asked questions
What is the molar mass of C18H21N3O3?
The molar mass of C18H21N3O3 is 327.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 327.1583 Da.
How many compounds have the formula C18H21N3O3?
CompoundList lists 343 compounds with the molecular formula C18H21N3O3, including 2-(2-Methoxyphenyl)-1-(3-(pyridazin-3-yloxy)piperidin-1-yl)ethanone, 2-(Benzyloxy)-1-(3-(pyridazin-3-yloxy)piperidin-1-yl)ethanone, (2-Methoxyphenyl)(3-((6-methylpyridazin-3-yl)oxy)piperidin-1-yl)methanone. 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 C18H21N3O3?
C18H21N3O3 has a degree of unsaturation of 10. 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.