Molecular formula
C18H18N4O3
319 compounds have this formula on CompoundList.
- Molar mass
- 338.37g/mol
- Monoisotopic mass
- 338.1379Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 12
The formula C18H18N4O3 describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 4 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 × 1863.89%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 185.36%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 416.56%14.007 × 4 = 56.028 g/mol
- O Oxygen × 314.18%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H18N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 319 compounds
![Methyl 4-{[2-(3,5-dimethyl-1H-pyrazol-1-yl)-6-methylpyrimidin-4-yl]oxy}benzoate chemical structure, C18H18N4O3, CAS 312310-00-2](/s/NEXDZDGKLFECPR-UHFFFAOYSA-N.svg)
Methyl 4-{[2-(3,5-dimethyl-1H-pyrazol-1-yl)-6-methylpyrimidin-4-yl]oxy}benzoate
CAS 312310-00-2C18H18N4O3
![N-{(E)-[3-methoxy-4-(2-phenoxyethoxy)phenyl]methylidene}-4H-1,2,4-triazol-4-amine chemical structure, C18H18N4O3, CAS 354155-91-2](/s/WDILFMOJYFMFBR-CIAFOILYSA-N.svg)
N-{(E)-[3-methoxy-4-(2-phenoxyethoxy)phenyl]methylidene}-4H-1,2,4-triazol-4-amine
CAS 354155-91-2C18H18N4O3
![(E)-2-(1H-Benzo[d]imidazol-2-yl)-N'-(2,5-dimethoxybenzylidene)acetohydrazide chemical structure, C18H18N4O3, CAS 539806-62-7](/s/NDPGYEJSIRGDBL-YBFXNURJSA-N.svg)
(E)-2-(1H-Benzo[d]imidazol-2-yl)-N'-(2,5-dimethoxybenzylidene)acetohydrazide
CAS 539806-62-7C18H18N4O3
![3H-Pyrazol-3-one, 4-[2-(2,4-dimethoxyphenyl)diazenyl]-2,4-dihydro-5-methyl-2-phenyl- chemical structure, C18H18N4O3, CAS 61550-72-9](/s/BDPUFQZQVPHSCM-UHFFFAOYSA-N.svg)
3H-Pyrazol-3-one, 4-[2-(2,4-dimethoxyphenyl)diazenyl]-2,4-dihydro-5-methyl-2-phenyl-
CAS 61550-72-9C18H18N4O3
5,6,7,8-Tetrahydro-3-(5-methoxy-1,3,4-oxadiazol-2-yl)-6-(phenylmethyl)-1,6-naphthyridin-2(1H)-one
CAS 156364-04-4C18H18N4O3
![Ethyl 6-imino-11-methyl-2-oxo-7-(prop-2-en-1-yl)-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate chemical structure, C18H18N4O3, CAS 371923-14-7](/s/ZUBHQTQLWFLJIY-UHFFFAOYSA-N.svg)
Ethyl 6-imino-11-methyl-2-oxo-7-(prop-2-en-1-yl)-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate
CAS 371923-14-7C18H18N4O3
6-(4-Benzylamino-3-nitrophenyl)-5-methyl-4,5-dihydro-2H-pyridazin-3-one
CAS 77469-62-6C18H18N4O3
![Ethyl 2-(6-amino-4-benzyl-5-cyano-2,4-dihydropyrano[2,3-c]pyrazol-3-yl)acetate chemical structure, C18H18N4O3, CAS 625376-02-5](/s/FENTUVDIQGWLKL-UHFFFAOYSA-N.svg)
Ethyl 2-(6-amino-4-benzyl-5-cyano-2,4-dihydropyrano[2,3-c]pyrazol-3-yl)acetate
CAS 625376-02-5C18H18N4O3
6-Benzyl-3-((2,4-dimethoxyphenyl)amino)-1,2,4-triazin-5(4H)-one
CAS 534597-95-0C18H18N4O3
4-(2,6-Dimethylphenyl)-5-methyl-2-(4-nitrobenzyl)-2,4-dihydro-3H-1,2,4-triazol-3-one
CAS 860789-08-8C18H18N4O3
![3-[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-(pyridin-3-ylmethyl)propanamide chemical structure, C18H18N4O3, CAS 688759-26-4](/s/LCYKSZATLLIAFJ-UHFFFAOYSA-N.svg)
3-[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-(pyridin-3-ylmethyl)propanamide
CAS 688759-26-4C18H18N4O3
![(E)-N-[2-[2-(1H-Benzimidazol-2-yl)ethylamino]-2-oxoethyl]-3-(furan-2-yl)prop-2-enamide chemical structure, C18H18N4O3, CAS 674817-75-5](/s/HQFGYEIPFKYZQB-BQYQJAHWSA-N.svg)
(E)-N-[2-[2-(1H-Benzimidazol-2-yl)ethylamino]-2-oxoethyl]-3-(furan-2-yl)prop-2-enamide
CAS 674817-75-5C18H18N4O3
![4-Methoxy-N'-[2-(1-methylbenzimidazol-2-yl)acetyl]benzohydrazide chemical structure, C18H18N4O3, CAS 852708-47-5](/s/JNISLGOJUFFBKU-UHFFFAOYSA-N.svg)
4-Methoxy-N'-[2-(1-methylbenzimidazol-2-yl)acetyl]benzohydrazide
CAS 852708-47-5C18H18N4O3
![N-[(E)-{2-[2-(2-Methoxyphenoxy)ethoxy]phenyl}methylidene]-4H-1,2,4-triazol-4-amine chemical structure, C18H18N4O3, CAS 423732-80-3](/s/QZEGUIUJPDEICR-CIAFOILYSA-N.svg)
N-[(E)-{2-[2-(2-Methoxyphenoxy)ethoxy]phenyl}methylidene]-4H-1,2,4-triazol-4-amine
CAS 423732-80-3C18H18N4O3
![(1Z)-1-(3,4-Dihydroquinolin-1(2H)-yl)-1-[2-(2-nitrophenyl)hydrazinylidene]propan-2-one chemical structure, C18H18N4O3, CAS 670264-86-5](/s/ZKPLNXNSTQLOKD-ZZEZOPTASA-N.svg)
(1Z)-1-(3,4-Dihydroquinolin-1(2H)-yl)-1-[2-(2-nitrophenyl)hydrazinylidene]propan-2-one
CAS 670264-86-5C18H18N4O3
![1-(3,4-Dihydro-2H-quinolin-1-yl)-1-[(4-nitro-phenyl)-hydrazono]-propan-2-one chemical structure, C18H18N4O3, CAS 670264-77-4](/s/CGVOPGFFYAKNBF-ZZEZOPTASA-N.svg)
1-(3,4-Dihydro-2H-quinolin-1-yl)-1-[(4-nitro-phenyl)-hydrazono]-propan-2-one
CAS 670264-77-4C18H18N4O3
4-((2,5-Dimethoxyphenyl)diazenyl)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one
CAS 61550-73-0C18H18N4O3
![Ethyl 2-(2-(2-(pyridin-3-yl)-1H-benzo[d]imidazol-1-yl)acetamido)acetate chemical structure, C18H18N4O3, CAS 1105210-35-2](/s/MLALJEWYGULVTE-UHFFFAOYSA-N.svg)
Ethyl 2-(2-(2-(pyridin-3-yl)-1H-benzo[d]imidazol-1-yl)acetamido)acetate
CAS 1105210-35-2C18H18N4O3
![1-(2,7-Dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-(2-methoxyphenyl)urea chemical structure, C18H18N4O3, CAS 1060350-90-4](/s/PFLIPHNRDCMYDK-UHFFFAOYSA-N.svg)
1-(2,7-Dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-(2-methoxyphenyl)urea
CAS 1060350-90-4C18H18N4O3
4-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-3-ylmethyl)butanamide
CAS 1021211-27-7C18H18N4O3
![N-{4-[(6-Ethoxy-2-methylpyrimidin-4-yl)amino]phenyl}furan-2-carboxamide chemical structure, C18H18N4O3, CAS 946355-47-1](/s/OYKLQVFOCQTDLR-UHFFFAOYSA-N.svg)
N-{4-[(6-Ethoxy-2-methylpyrimidin-4-yl)amino]phenyl}furan-2-carboxamide
CAS 946355-47-1C18H18N4O3
N-(1-Methyl-3-phenylpropyl)-5-(2-oxo-1,2-dihydro-3-pyridinyl)-1,2,4-oxadiazole-3-carboxamide
CAS 1574637-64-1C18H18N4O3
N-(4-Methoxyphenyl)-4-(4-oxo-1,2,3-benzotriazin-3-yl)butanamide
CAS 880811-85-8C18H18N4O3
Ethyl 4-((2-(1H-imidazol-1-yl)quinolin-8-yl)amino)-4-oxobutanoate
CAS 1226427-98-0C18H18N4O3
- N-[2-(2-Furyl)ethyl]-1-(1H-indazol-3-yl)-5-oxo-3-pyrrolidinecarboxamide1435983-91-7C18H18N4O3
- N-(4-(6,7-Dimethoxyquinazolin-4-ylamino)phenyl)acetamide202475-66-9C18H18N4O3
- N,1-bis(2-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide871323-21-6C18H18N4O3
- 4-Butoxy-N-(5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl)benzamide862809-97-0C18H18N4O3
- 3-(2,5-Dioxopyrrolidin-1-yl)-N-(2-methyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)benzamide1203387-95-4C18H18N4O3
- N-(3-(1H-Pyrrol-1-yl)propyl)-3-(benzo[d][1,3]dioxol-5-yl)-1H-pyrazole-5-carboxamide1298062-25-5C18H18N4O3
- Ethyl 6-imino-13-methyl-2-oxo-7-(prop-2-en-1-yl)-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxylate683806-64-6C18H18N4O3
- 2-Amino-N'-(1-benzyl-2,5-dioxopyrrolidin-3-yl)benzohydrazide956921-22-5C18H18N4O3
- N-(2-Methoxy-5-{6-methoxyimidazo[1,2-b]pyridazin-2-yl}phenyl)cyclopropanecarboxamide955780-92-4C18H18N4O3
- N-[1-(1H-Benzimidazol-2-yl)-2-methylpropyl]-4-nitrobenzamide852294-37-2C18H18N4O3
- 2-(2-Methoxyphenoxy)-N-[3-(4-methylphenyl)-1H-1,2,4-triazol-5-yl]acetamide924239-02-1C18H18N4O3
- 1-(4-Ethoxyphenyl)-3-[(4-oxo-3H-phthalazin-1-yl)methyl]urea899745-92-7C18H18N4O3
- Ethyl 2-(2-(2-(pyridin-2-yl)-1H-benzo[d]imidazol-1-yl)acetamido)acetate1105240-37-6C18H18N4O3
- 4-[5-(Furan-2-yl)-1,3,4-oxadiazol-2-yl]-N-phenylpiperidine-1-carboxamide1169996-74-0C18H18N4O3
- 1-(2-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(m-tolyl)urea1049223-29-1C18H18N4O3
- N-(2,7-Dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-ethoxynicotinamide946382-61-2C18H18N4O3
- 4-Acetyl-3,5-dimethyl-N-[2-methyl-5-(1,3,4-oxadiazol-2-yl)phenyl]-1H-pyrrole-2-carboxamide1258740-01-0C18H18N4O3
- Benzofuran-2-yl(4-(6-methoxypyridazin-3-yl)piperazin-1-yl)methanone946235-38-7C18H18N4O3
- 2-{[1-(5-Cyclopropyl-1,2-oxazole-3-carbonyl)piperidin-4-yl]oxy}pyridine-3-carbonitrile1798024-31-3C18H18N4O3
- N-(4-Acetamidophenyl)-2-(3-oxo-1,2,3,4-tetrahydroquinoxalin-2-yl)acetamide1008865-40-4C18H18N4O3
- 1 suppliersp-Hydroxymesocarb72460-70-9C18H18N4O3
- N-(4-Methoxybenzyl)-3-(4-oxo-4H-pyrido[2,1-c][1,2,4]triazin-3-yl)propanamide1435998-56-3C18H18N4O3
- 2-[4-(4-Methoxyphenyl)piperazin-1-yl]-5-nitrobenzonitrile451459-93-1C18H18N4O3
- 6-(4-Methoxybenzyl)-3-((4-methoxyphenyl)amino)-1,2,4-triazin-5(4H)-one501352-50-7C18H18N4O3
- 1-Benzyl-6-(furan-2-ylmethyl)-2-hydroxy-5,6,7,8-tetrahydropyrimido[4,5-d]pyrimidin-4(1H)-one781654-87-3C18H18N4O3
- Methyl 4-(6-amino-5-cyano-3-propyl-2,4-dihydropyrano[2,3-c]pyrazol-4-yl)benzoate445266-54-6C18H18N4O3
- 6-Amino-4-(1,3-benzodioxol-5-yl)-3-tert-butyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile371124-86-6C18H18N4O3
- 1,6,7-Trimethyl-3-phenethyloxazolo[2,3-f]purine-2,4(1H,3H)-dione899997-56-9C18H18N4O3
- 2-(2-Methoxyphenoxy)-N-(4-(5-methyl-1H-1,2,3-triazol-1-yl)phenyl)acetamide924829-68-5C18H18N4O3
- 4-(4-(1H-Indol-4-yl)-6,7-dihydro-3H-imidazo[4,5-c]pyridin-5(4H)-yl)-4-oxobutanoic acid1071914-00-5C18H18N4O3
- 2-(3-Hydroxy-4-(5-methyl-4-phenyl-1H-pyrazol-3-yl)phenoxy)acetohydrazide879565-38-5C18H18N4O3
- 1-(2-Methoxyphenyl)-N-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide871323-22-7C18H18N4O3
- Dibenz(b,f)(1,4)oxazepine, 11-(4-methyl-1-piperazinyl)-2-nitro-21636-37-3C18H18N4O3
- N-(3,4-Dimethoxyphenyl)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carboxamide895643-48-8C18H18N4O3
- 2-[4-(3-Methoxyphenyl)piperazin-1-yl]-5-nitrobenzonitrile945299-91-2C18H18N4O3
- (E)-2-(3,4-Dihydroquinolin-1(2H)-yl)-N'-(3-nitrobenzylidene)acetohydrazide681479-29-8C18H18N4O3
- N-(2,5-Dimethoxyphenyl)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carboxamide924840-94-8C18H18N4O3
- 6-(3,4-Dimethoxyphenyl)-2-methyl-6,7-dihydro[1,2,4]triazolo[5,1-b]quinazolin-8(5H)-one878995-02-9C18H18N4O3
- 3-Butyl-1-methyl-7-phenyloxazolo[2,3-f]purine-2,4(1H,3H)-dione899997-66-1C18H18N4O3
- 3-(1H-Tetrazol-1-yl)phenyl 4-isobutoxybenzoate912905-05-6C18H18N4O3
- 3-(2-Hydroxy-5-oxo-4,5-dihydro-3H-1,4-benzodiazepin-3-yl)-N-(pyridin-2-ylmethyl)propanamide1192279-09-6C18H18N4O3
- 4-(6-Amino-5-cyano-3-propyl-1,4-dihydropyrano[2,3-c]pyrazol-4-yl)phenyl acetate401645-10-1C18H18N4O3
- 4-Butoxy-N-(5-(pyridin-2-yl)-1,3,4-oxadiazol-2-yl)benzamide862809-59-4C18H18N4O3
- 1,7-Dimethyl-3-(3-phenylpropyl)oxazolo[2,3-f]purine-2,4(1H,3H)-dione899967-20-5C18H18N4O3
- N-(3-Methoxyphenyl)-4-(4-oxo-1,2,3-benzotriazin-3-yl)butanamide880812-30-6C18H18N4O3
- N'-[(E)-(3-Prop-2-enoxyphenyl)methylideneamino]-N-(pyridin-3-ylmethyl)oxamide352012-21-6C18H18N4O3
- 1-(2-Methoxyphenyl)-N-(3-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide871323-43-2C18H18N4O3
- N-(2-Methoxyphenyl)-1-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide878733-95-0C18H18N4O3
- 1-[4-(Acetylamino)phenyl]-5-oxo-N-(pyridin-3-yl)pyrrolidine-3-carboxamide905181-85-3C18H18N4O3
- 1-[4-(Acetylamino)phenyl]-5-oxo-N-(pyridin-2-yl)pyrrolidine-3-carboxamide905182-28-7C18H18N4O3
- 1,6,7-Trimethyl-3-(3-methylbenzyl)oxazolo[2,3-f]purine-2,4(1H,3H)-dione899947-38-7C18H18N4O3
- N-[(2-Methoxyphenyl)methyl]-3-(4-oxo-3,4-dihydro-1,2,3-benzotriazin-3-yl)propanamide440331-56-6C18H18N4O3
- 6-(2,4-Dimethoxyphenyl)-2-methyl-6,7-dihydro[1,2,4]triazolo[5,1-b]quinazolin-8(5H)-one1015546-86-7C18H18N4O3
- 3-(1H-Tetrazol-1-yl)phenyl 3-butoxybenzoate912894-88-3C18H18N4O3
- 2-(2,5-Dioxopyrrolidin-1-yl)-N-(2-phenyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)acetamide1203204-82-3C18H18N4O3
- 1-Methyl-6-oxo-N-[3-(quinolin-8-yloxy)propyl]-1,6-dihydropyridazine-3-carboxamide1235118-73-6C18H18N4O3
- 1-(2-Hydroxy-2-phenylethyl)-N-(3-methoxyphenyl)-1H-1,2,3-triazole-4-carboxamide1396875-77-6C18H18N4O3
- N-[2-(3-Cyclopropyl-5-oxo-4-phenyl-4,5-dihydro-1H-1,2,4-triazol-1-yl)ethyl]furan-2-carboxamide1396807-94-5C18H18N4O3
- N-(4-(6,7-Dihydro-5H-pyrrolo[1,2-a]imidazol-3-yl)phenyl)-2-(2,5-dioxopyrrolidin-1-yl)acetamide1421528-35-9C18H18N4O3
- N-(2-(6-(Furan-2-yl)-1H-imidazo[1,2-b]pyrazol-1-yl)ethyl)-2,5-dimethylfuran-3-carboxamide1795085-92-5C18H18N4O3
- 2-((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-7,8,9,10-tetrahydro-[1,2,4]triazino[4,5-b]indazol-1(2H)-one2034355-31-0C18H18N4O3
- 7-[(2-Furylmethyl)amino]-2-(4-methoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one2109090-52-8C18H18N4O3
- 7-[(2-Furylmethyl)amino]-2-(3-methoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one2109090-89-1C18H18N4O3
- 2,2-Diethyl-6-[3-(1H-pyrazol-4-yl)-1,2,4-oxadiazol-5-yl]-3H-chromen-4-one2256030-24-5C18H18N4O3
- N,1-bis(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide866872-49-3C18H18N4O3
- N-(4-((2-Hydroxy-4-(2-oxo-1-pyrrolidinyl)phenyl)azo)phenyl)acetamide85223-04-7C18H18N4O3
- [(E)-[4-[(2-Cyanophenyl)methoxy]-3-ethoxyphenyl]methylideneamino]urea301810-01-5C18H18N4O3
- N-[(E)-{4-[2-(3-Methoxyphenoxy)ethoxy]phenyl}methylidene]-4H-1,2,4-triazol-4-amine301810-18-4C18H18N4O3
- 2-[3-(2,5-Dimethylphenyl)-6-oxopyridazin-1-yl]-N-(5-methyl-1,2-oxazol-3-yl)acetamide898132-87-1C18H18N4O3
- 3-Methyl-N-(2-(8-methylimidazo[1,2-a]pyridin-2-yl)ethyl)-4-nitrobenzamide868978-37-4C18H18N4O3
- N-(2,4-Dimethoxyphenyl)-5-methyl-1-phenyltriazole-4-carboxamide895643-42-2C18H18N4O3
- N-(2-Methoxyphenyl)-1-(3-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide924840-10-8C18H18N4O3
- N-[7-(Morpholin-4-yl)-2,1,3-benzoxadiazol-4-yl]-2-phenylacetamide916037-37-1C18H18N4O3
- N1-(3-(2-oxopyrrolidin-1-yl)phenyl)-N2-(pyridin-2-ylmethyl)oxalamide942012-32-0C18H18N4O3
- N1-(3-(2-oxopyrrolidin-1-yl)phenyl)-N2-(pyridin-4-ylmethyl)oxalamide941934-76-5C18H18N4O3
- 4-(1H-Tetrazol-1-yl)phenyl 4-butoxybenzoate912896-25-4C18H18N4O3
Frequently asked questions
What is the molar mass of C18H18N4O3?
The molar mass of C18H18N4O3 is 338.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 338.1379 Da.
How many compounds have the formula C18H18N4O3?
CompoundList lists 319 compounds with the molecular formula C18H18N4O3, including Methyl 4-{[2-(3,5-dimethyl-1H-pyrazol-1-yl)-6-methylpyrimidin-4-yl]oxy}benzoate, N-{(E)-[3-methoxy-4-(2-phenoxyethoxy)phenyl]methylidene}-4H-1,2,4-triazol-4-amine, (E)-2-(1H-Benzo[d]imidazol-2-yl)-N'-(2,5-dimethoxybenzylidene)acetohydrazide. 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 C18H18N4O3?
C18H18N4O3 has a degree of unsaturation of 12. 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.