Molecular formula
C16H18N4O3
223 compounds have this formula on CompoundList.
- Molar mass
- 314.35g/mol
- Monoisotopic mass
- 317.1567Da
- Atoms
- 41
- Elements
- 4
- Rings plus double bonds
- 10
The formula C16H18N4O3 describes a molecule made of 16 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 × 1661.14%12.011 × 16 = 192.176 g/mol
- H Hydrogen × 185.77%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 417.82%14.007 × 4 = 56.028 g/mol
- O Oxygen × 315.27%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C16H18N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 223 compounds
Disperse red 1
CAS 2872-52-8C16H18N4O3
![N'-[1-Oxo-2-(4-propan-2-ylphenoxy)ethyl]-2-pyrazinecarbohydrazide chemical structure, C16H18N4O3, CAS 462060-48-6](/s/QEZNYWJORFQKDY-UHFFFAOYSA-N.svg)
N'-[1-Oxo-2-(4-propan-2-ylphenoxy)ethyl]-2-pyrazinecarbohydrazide
CAS 462060-48-6C16H18N4O3
1-(3,4-Dihydro-1H-isoquinolin-2-yl)-2-(3,5-dimethyl-4-nitropyrazol-1-yl)ethanone
CAS 355805-33-3C16H18N4O3
1-(2-Methoxyphenyl)-4-(5-nitropyridin-2-yl)piperazine
CAS 158399-80-5C16H18N4O3
1-(3,4-Dihydroquinolin-1(2H)-yl)-2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)ethanone
CAS 353464-09-2C16H18N4O3
1-(3-Methoxyphenyl)-4-(5-nitropyridin-2-yl)piperazine
CAS 158399-79-2C16H18N4O3
8-(4-Methoxyphenyl)-1-methyl-9-propyl-3H-purine-2,6-dione
CAS 61080-36-2C16H18N4O3
4-Butyl-7-methyl-5-(2H-tetrazol-5-ylmethoxy)chromen-2-one
CAS 862184-67-6C16H18N4O3
KP 136
CAS 76239-32-2C16H18N4O3
![1-(7-(3,4-Dimethoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)ethanone chemical structure, C16H18N4O3, CAS 361481-27-8](/s/LRJYNNMGVQTTRS-UHFFFAOYSA-N.svg)
1-(7-(3,4-Dimethoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)ethanone
CAS 361481-27-8C16H18N4O3
(E)-3-Cyclopropyl-N'-(3,4-dimethoxybenzylidene)-1H-pyrazole-5-carbohydrazide
CAS 306302-36-3C16H18N4O3
4-Butyl-8-methyl-7-(2H-tetrazol-5-ylmethoxy)chromen-2-one
CAS 848995-81-3C16H18N4O3
(E)-3-Cyclopropyl-N'-(3-ethoxy-2-hydroxybenzylidene)-1H-pyrazole-5-carbohydrazide
CAS 634883-85-5C16H18N4O3
N-(2,3-Dihydro-1H-inden-5-yl)-2-(3,5-dimethyl-4-nitropyrazol-1-yl)acetamide
CAS 515829-09-1C16H18N4O3
![2-(3-Hydroxy-5-methyl-4H-pyrazol-4-yl)-N'-[(1E,2E)-3-(2-methoxyphenyl)prop-2-en-1-ylidene]acetohydrazide chemical structure, C16H18N4O3, CAS 307347-04-2](/s/YVDZCMHQQSSSJZ-VZGLCWHJSA-N.svg)
2-(3-Hydroxy-5-methyl-4H-pyrazol-4-yl)-N'-[(1E,2E)-3-(2-methoxyphenyl)prop-2-en-1-ylidene]acetohydrazide
CAS 307347-04-2C16H18N4O3
N1-(2-cyanophenyl)-N2-(3-(2-oxopyrrolidin-1-yl)propyl)oxalamide
CAS 898356-06-4C16H18N4O3
![N-[(1,5-Dimethyl-1H-pyrazol-4-yl)methyl]-N-methyl-3-(4-nitrophenyl)acrylamide chemical structure, C16H18N4O3, CAS 1164534-44-4](/s/CDSBGRHEAXGVAC-RMKNXTFCSA-N.svg)
N-[(1,5-Dimethyl-1H-pyrazol-4-yl)methyl]-N-methyl-3-(4-nitrophenyl)acrylamide
CAS 1164534-44-4C16H18N4O3
1-(4-Methoxyphenyl)-4-(6-nitropyridin-3-yl)piperazine
CAS 128063-83-2C16H18N4O3
1,3,7-Trimethyl-8-(2-phenylethoxy)-3,7-dihydro-1H-purine-2,6-dione
CAS 5415-84-9C16H18N4O3
![2-[Ethyl-2,2,2-d3-[4-[(1Z)-2-(4-nitrophenyl)diazenyl]phenyl]amino]ethanol chemical structure, C16H18N4O3, CAS 947601-97-0](/s/FOQABOMYTOFLPZ-FIBGUPNXSA-N.svg)
2-[Ethyl-2,2,2-d3-[4-[(1Z)-2-(4-nitrophenyl)diazenyl]phenyl]amino]ethanol
CAS 947601-97-0C16H18N4O3
Ethyl 2,6-dimethyl-5-(pyridin-2-ylcarbamoylamino)pyridine-3-carboxylate
CAS 380343-19-1C16H18N4O3
![1,3-Dimethyl-7-[2-(4-methylphenoxy)ethyl]purine-2,6-dione chemical structure, C16H18N4O3, CAS 849534-26-5](/s/XOMZMVXQHSOGIH-UHFFFAOYSA-N.svg)
1,3-Dimethyl-7-[2-(4-methylphenoxy)ethyl]purine-2,6-dione
CAS 849534-26-5C16H18N4O3
![N-(2-Methoxyethyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide chemical structure, C16H18N4O3, CAS 864854-89-7](/s/OEHSZBCETCPURM-UHFFFAOYSA-N.svg)
N-(2-Methoxyethyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide
CAS 864854-89-7C16H18N4O3
![3-Cyclopropyl-N'-[(1E)-(3-ethoxy-4-hydroxyphenyl)methylene]-1H-pyrazole-5-carbohydrazide chemical structure, C16H18N4O3, CAS 5788-38-5](/s/NYVRNIAUWFMNQE-RQZCQDPDSA-N.svg)
3-Cyclopropyl-N'-[(1E)-(3-ethoxy-4-hydroxyphenyl)methylene]-1H-pyrazole-5-carbohydrazide
CAS 5788-38-5C16H18N4O3
- N-Cyclopentyl-3-({4-nitro-1H-pyrazol-1-yl}methyl)benzamide515123-37-2C16H18N4O3
- (Z)-3-(Dimethylamino)-2-(3,5-dimethyl-1H-pyrazol-1-yl)-1-(3-nitrophenyl)-2-propen-1-one956792-37-3C16H18N4O3
- 2-Methoxyethyl 5-methyl-7-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate775292-83-6C16H18N4O3
- 5-Morpholin-4-yl-2-nitro-N-(pyridin-3-ylmethyl)aniline347356-05-2C16H18N4O3
- N'-[(E)-(2,5-Dimethoxyphenyl)methylidene]-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carbohydrazide306986-78-7C16H18N4O3
- (E)-N'-(3-Ethoxy-2-hydroxybenzylidene)-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carbohydrazide306986-72-1C16H18N4O3
- 3-(2,3-Dimethoxyphenyl)-5-(3-isopropyl-1H-pyrazol-5-yl)-1,2,4-oxadiazole1037176-34-3C16H18N4O3
- [6-Oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]acetic acid931939-53-6C16H18N4O3
- N-[2-(2,5-Dimethoxyphenyl)ethyl]-3-methyl-[1,2]oxazolo[5,4-d]pyrimidin-4-amine894589-02-7C16H18N4O3
- 4-(2-(4-Isopropyl-6-oxopyrimidin-1(6H)-yl)acetamido)benzamide1203332-54-0C16H18N4O3
- N-(6-Methoxypyridin-3-yl)-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide1324071-56-8C16H18N4O3
- N-(2-Cyclohex-1-en-1-ylethyl)-5-(2-oxo-1,2-dihydropyridin-3-yl)-1,2,4-oxadiazole-3-carboxamide1574598-60-9C16H18N4O3
- Ethyl 3-[1-(1H-benzimidazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]propanoate944782-88-1C16H18N4O3
- 3-(3,4-Dimethoxyphenyl)-5-(3-isopropyl-1H-pyrazol-5-yl)-1,2,4-oxadiazole1192572-12-5C16H18N4O3
- 2-{[7-(2-Furylmethyl)-5,6-dimethylpyrrolo[3,2-e]pyrimidin-4-yl]amino}propanoic acid1101785-73-2C16H18N4O3
- N-(5-Methylisoxazol-3-yl)-1-picolinoylpiperidine-4-carboxamide1226439-61-7C16H18N4O3
- N-(2-Methoxyethyl)-2-(3-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide1021260-59-2C16H18N4O3
- 6-(4-(4-Methoxyphenyl)piperazine-1-carbonyl)pyridazin-3(2H)-one900001-73-2C16H18N4O3
- 6-Ethyl-5-((furan-2-ylmethyl)amino)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione946203-09-4C16H18N4O3
- 3-(2,5-Dioxo-4-imidazolidinyl)-N-[2-(1H-indol-3-yl)ethyl]propanamide1422566-47-9C16H18N4O3
- 4a,5-Epoxyethano-3-methyl-4a,5-dihydrolumiflavin112076-30-9C16H18N4O3
- 1-[3-(4-Nitrophenyl)-3,3a,6,7-tetrahydro-4,7-ethanopyrazolo[4,3-b]pyridin-2(5H)-yl]ethanone353268-46-9C16H18N4O3
- N-{4-[4-(Acetylamino)-3-aminophenoxy]-2-aminophenyl}acetamide4824-81-1C16H18N4O3
- Ethyl 7-(4-methoxyphenyl)-5-methyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate361481-04-1C16H18N4O3
- 2-(3,5-Dimethyl-4-nitropyrazol-1-yl)-1-(2-methyl-2,3-dihydroindol-1-yl)ethanone488822-50-0C16H18N4O3
- Ethyl 1-(4-(2-oxopiperidin-1-yl)pyridin-2-yl)-1H-pyrazole-4-carboxylate1449117-46-7C16H18N4O3
- 1-{3-Formyl-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl}piperidine-4-carboxamide889814-81-7C16H18N4O3
- (E)-Methyl 4-((2-(3-isopropyl-1H-pyrazole-5-carbonyl)hydrazono)methyl)benzoate1310341-71-9C16H18N4O3
- N-[(E)-(3-Hydroxy-4-methoxyphenyl)methylideneamino]-4,5,6,7-tetrahydro-1H-indazole-3-carboxamide1477482-47-5C16H18N4O3
- 1-(3-Morpholin-4-ylpropyl)chromeno[3,4-d]triazol-4-one327983-59-5C16H18N4O3
- Ethyl 2-amino-1-(3-hydroxypropyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate301358-59-8C16H18N4O3
- N-(2-Methoxyethyl)-1,7-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide899414-86-9C16H18N4O3
- 1-(3-(3-Nitrophenyl)-3,3a,6,7-tetrahydro-4,7-ethanopyrazolo[4,3-b]pyridin-2(5H)-yl)ethanone389127-11-1C16H18N4O3
- 2,5-Dimethyl-4-nitro-N-(1,2,3,4-tetrahydronaphthalen-1-yl)pyrazole-3-carboxamide515830-48-5C16H18N4O3
- Methyl 7-(4-ethoxyphenyl)-5-methyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate697230-16-3C16H18N4O3
- 3-{[7-(2-Furylmethyl)-5,6-dimethylpyrrolo[3,2-e]pyrimidin-4-yl]amino}propanoic acid919016-40-3C16H18N4O3
- Dabigatran etexilate impurity 821771756-20-7C16H18N4O3
- Piribedil N-oxide53954-71-5C16H18N4O3
- 1-(7-(2,3-Dimethoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)ethanone681470-97-3C16H18N4O3
- 8-Methoxy-1,3-dimethyl-7-[(2-methylphenyl)methyl]purine-2,6-dione696596-79-9C16H18N4O3
- 7H-Pyrazolo(4,3-d)pyrimidin-7-one, 1,6-dihydro-6-(2-(3,4-dimethoxyphenyl)ethyl)-3-methyl-86927-76-6C16H18N4O3
- 2-Morpholino-N-[3-(2-pyrazinyloxy)phenyl]acetamide866157-09-7C16H18N4O3
- N-{[1-(Furan-3-carbonyl)piperidin-4-yl]methyl}pyrazine-2-carboxamide1396795-51-9C16H18N4O3
- 3-(4-((6-Methylpyridazin-3-yl)oxy)piperidine-1-carbonyl)pyridin-2(1H)-one1797755-37-3C16H18N4O3
- 4-Pyrimidinol, 2-(4-piperonyl-1-piperazinyl)-3601-73-8C16H18N4O3
- Ethyl 2-amino-1-(2-methoxyethyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate328035-79-6C16H18N4O3
- (4E)-2-(4-Nitrophenyl)-4-[(prop-2-enylamino)methylidene]-5-propylpyrazol-3-one375842-15-2C16H18N4O3
- 1-(3-Methoxypropyl)-N-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide900899-69-6C16H18N4O3
- Ethyl 5-morpholino-3-phenyl-1,2,4-triazine-6-carboxylate866049-07-2C16H18N4O3
- 3-Methoxy-1-methyl-N-[3-(2-oxopyrrolidin-1-yl)phenyl]-1H-pyrazole-4-carboxamide1207004-12-3C16H18N4O3
- 1-(4-Cyclopropylcarbamoyl-phenyl)-5-propyl-1H-[1,2,3]triazole-4-carboxylic acid912838-20-1C16H18N4O3
- N-(1,3-Benzodioxol-5-ylmethyl)-4-(2-pyrimidinylamino)butanamide1401597-01-0C16H18N4O3
- (5-Cyclopropylisoxazol-3-yl)(4-(pyrazin-2-yloxy)piperidin-1-yl)methanone1448133-48-9C16H18N4O3
- N-(1-(Cyclopropanecarbonyl)indolin-6-yl)-2-oxoimidazolidine-1-carboxamide1448121-75-2C16H18N4O3
- 1-(Benzo[d][1,3]dioxol-5-yl)-3-((5-cyclopropyl-1-methyl-1H-pyrazol-3-yl)methyl)urea1448078-94-1C16H18N4O3
- N-{[4-(Dimethylamino)-6-methylpyrimidin-2-yl]methyl}-2H-1,3-benzodioxole-5-carboxamide1797811-60-9C16H18N4O3
- 2-[(2-Hydroxy-3,4-dihydroquinolin-7-yl)oxy]-N-[2-(1H-imidazol-4-yl)ethyl]acetamide1574290-63-3C16H18N4O3
- Methyl 2-[4-(1H-1,2,3-triazol-1-yl)piperidine-1-carbonyl]benzoate1795190-36-1C16H18N4O3
- 6-Oxo-N-((1r,4r)-4-(pyrazin-2-yloxy)cyclohexyl)-1,6-dihydropyridine-3-carboxamide2034223-04-4C16H18N4O3
- Methyl 5-ethyl-7-(3-methoxyphenyl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate725217-17-4C16H18N4O3
- 8-Benzyl-7-(2-hydroxyethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione6329-79-9C16H18N4O3
- 1,3-Dimethyl-8-(4-propoxyphenyl)-3,7-dihydro-1H-purine-2,6-dione667881-15-4C16H18N4O3
- 1-(3-Methoxypropyl)-9-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide900900-82-5C16H18N4O3
- 2,4-Diamino-5-[3,4-dimethoxy-5-(2-propynyloxy)benzyl]pyrimidine83010-89-3C16H18N4O3
- 2-Allyl-8-(4-ethoxyphenyl)-7,8-dihydroimidazo[2,1-c][1,2,4]triazine-3,4(2H,6H)-dione941959-71-3C16H18N4O3
- 2-Oxo-N-[(4-oxo-3,4-dihydrophthalazin-1-yl)methyl]-2-(piperidin-1-yl)acetamide946290-45-5C16H18N4O3
- 2-Amino-3-[[N-(benzyloxycarbonyl)sarcosyl]amino]pyridine175530-54-8C16H18N4O3
- 8-Methoxy-1,3-dimethyl-7-phenethyl-1H-purine-2,6(3H,7H)-dione946270-46-8C16H18N4O3
- N-Cyclopropyl-N'-{2-[(1H-indol-2-ylcarbonyl)amino]ethyl}ethanediamide1081123-68-3C16H18N4O3
- N-(2-Methoxyethyl)-3-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)propanamide1185162-71-3C16H18N4O3
- 1-Isonicotinoyl-N-(5-methylisoxazol-3-yl)piperidine-4-carboxamide1226447-20-6C16H18N4O3
- 1-[3-(4-Oxoquinazolin-3-yl)propanoyl]pyrrolidine-2-carboxamide1282094-76-1C16H18N4O3
- N-(3-Cyclopropyl-1H-1,2,4-triazol-5-yl)-2-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)acetamide1574366-09-8C16H18N4O3
- 1-(2H-Indazol-3-yl)-4-(morpholin-4-ylcarbonyl)pyrrolidin-2-one1436000-76-8C16H18N4O3
- (E)-3-(Furan-2-yl)-N-((4-morpholinopyrimidin-2-yl)methyl)acrylamide1798405-62-5C16H18N4O3
- 3-(3-((6-Methylpyridazin-3-yl)oxy)piperidine-1-carbonyl)pyridin-2(1H)-one2034438-68-9C16H18N4O3
Frequently asked questions
What is the molar mass of C16H18N4O3?
The molar mass of C16H18N4O3 is 314.35 g/mol, calculated from standard atomic weights for 16 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 317.1567 Da.
How many compounds have the formula C16H18N4O3?
CompoundList lists 223 compounds with the molecular formula C16H18N4O3, including Disperse red 1, N'-[1-Oxo-2-(4-propan-2-ylphenoxy)ethyl]-2-pyrazinecarbohydrazide, 1-(3,4-Dihydro-1H-isoquinolin-2-yl)-2-(3,5-dimethyl-4-nitropyrazol-1-yl)ethanone. 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 C16H18N4O3?
C16H18N4O3 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.