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Molecular formula

C18H20N4O3

324 compounds have this formula on CompoundList.

Molar mass
340.38g/mol
Monoisotopic mass
340.1535Da
Atoms
45
Elements
4
Rings plus double bonds
11

The formula C18H20N4O3 describes a molecule made of 18 carbon atoms, 20 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 × 1863.52%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 205.92%
    1.008 × 20 = 20.160 g/mol
  • N Nitrogen × 416.46%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 314.10%
    15.999 × 3 = 47.997 g/mol
Look up another formula

Compounds with the formula C18H20N4O3

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 301 to 324 of 324 compounds

3-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)-1,2-dihydropyridin-2-one chemical structure, C18H20N4O3, CAS 2549043-34-5
3-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)-1,2-dihydropyridin-2-one
CAS 2549043-34-5C18H20N4O3
5-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)pyridin-3-ol chemical structure, C18H20N4O3, CAS 2549023-23-4
5-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)pyridin-3-ol
CAS 2549023-23-4C18H20N4O3
2-(2,5-Dioxopyrrolidin-1-yl)-N-{2-[4-(1-methyl-1H-pyrazol-4-yl)phenyl]ethyl}acetamide chemical structure, C18H20N4O3, CAS 2548975-21-7
2-(2,5-Dioxopyrrolidin-1-yl)-N-{2-[4-(1-methyl-1H-pyrazol-4-yl)phenyl]ethyl}acetamide
CAS 2548975-21-7C18H20N4O3
2-(Cyclobutylmethyl)-7-(4-ethoxyphenyl)-2H,3H,7H,8H-[1,2,4]triazolo[4,3-a]pyrazine-3,8-dione chemical structure, C18H20N4O3, CAS 2640974-30-5
2-(Cyclobutylmethyl)-7-(4-ethoxyphenyl)-2H,3H,7H,8H-[1,2,4]triazolo[4,3-a]pyrazine-3,8-dione
CAS 2640974-30-5C18H20N4O3
2-(2,5-Dioxopyrrolidin-1-yl)-N-{2-[4-(1-methyl-1H-pyrazol-5-yl)phenyl]ethyl}acetamide chemical structure, C18H20N4O3, CAS 2640964-82-3
2-(2,5-Dioxopyrrolidin-1-yl)-N-{2-[4-(1-methyl-1H-pyrazol-5-yl)phenyl]ethyl}acetamide
CAS 2640964-82-3C18H20N4O3
3-{2-[4-(1,8-Naphthyridin-2-yl)piperidin-1-yl]-2-oxoethyl}-1,3-oxazolidin-2-one chemical structure, C18H20N4O3, CAS 2640934-95-6
3-{2-[4-(1,8-Naphthyridin-2-yl)piperidin-1-yl]-2-oxoethyl}-1,3-oxazolidin-2-one
CAS 2640934-95-6C18H20N4O3
2-(3,5-Dimethyl-1,2-oxazol-4-yl)-N-{2-hydroxy-2-[4-(1H-pyrazol-1-yl)phenyl]ethyl}acetamide chemical structure, C18H20N4O3, CAS 2415511-64-5
2-(3,5-Dimethyl-1,2-oxazol-4-yl)-N-{2-hydroxy-2-[4-(1H-pyrazol-1-yl)phenyl]ethyl}acetamide
CAS 2415511-64-5C18H20N4O3
4-({1-[(3,4-Dimethylphenyl)carbamoyl]azetidin-3-yl}oxy)pyridine-2-carboxamide chemical structure, C18H20N4O3, CAS 2770626-03-2
4-({1-[(3,4-Dimethylphenyl)carbamoyl]azetidin-3-yl}oxy)pyridine-2-carboxamide
CAS 2770626-03-2C18H20N4O3
1-[1-(1,3-Benzoxazol-2-yl)piperidin-4-yl]-3-cyclopropylimidazolidine-2,4-dione chemical structure, C18H20N4O3, CAS 2770589-40-5
1-[1-(1,3-Benzoxazol-2-yl)piperidin-4-yl]-3-cyclopropylimidazolidine-2,4-dione
CAS 2770589-40-5C18H20N4O3
3-{[3-(3-Methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}-1,3-diazaspiro[4.5]decane-2,4-dione chemical structure, C18H20N4O3, CAS 2770620-52-3
3-{[3-(3-Methylphenyl)-1,2,4-oxadiazol-5-yl]methyl}-1,3-diazaspiro[4.5]decane-2,4-dione
CAS 2770620-52-3C18H20N4O3
tert-Butyl N-[3-(3-hydroxyphenyl)imidazo[1,2-b]pyridazin-6-yl]-N-methylcarbamate chemical structure, C18H20N4O3, CAS 2413876-70-5
tert-Butyl N-[3-(3-hydroxyphenyl)imidazo[1,2-b]pyridazin-6-yl]-N-methylcarbamate
CAS 2413876-70-5C18H20N4O3
Benzyl N-[5-(hydroxyimino)-7,7-dimethyl-5,6,7,8-tetrahydroquinazolin-2-yl]carbamate chemical structure, C18H20N4O3, CAS 2681255-27-4
Benzyl N-[5-(hydroxyimino)-7,7-dimethyl-5,6,7,8-tetrahydroquinazolin-2-yl]carbamate
CAS 2681255-27-4C18H20N4O3
3-[5-(3,6-Diazabicyclo[3.1.1]heptan-6-yl)-1-oxo-isoindolin-2-yl]piperidine-2,6-dione chemical structure, C18H20N4O3, CAS 2924577-51-3
3-[5-(3,6-Diazabicyclo[3.1.1]heptan-6-yl)-1-oxo-isoindolin-2-yl]piperidine-2,6-dione
CAS 2924577-51-3C18H20N4O3
2,3-Dihydro-1-[6-(4-piperidinyloxy)-4-pyrimidinyl]-1H-indole-5-carboxylic acid chemical structure, C18H20N4O3, CAS 1259510-84-3
2,3-Dihydro-1-[6-(4-piperidinyloxy)-4-pyrimidinyl]-1H-indole-5-carboxylic acid
CAS 1259510-84-3C18H20N4O3
2-(Cyclopentylmethyl)-7-(3-methoxyphenyl)-2H,3H,7H,8H-[1,2,4]triazolo[4,3-a]pyrazine-3,8-dione chemical structure, C18H20N4O3, CAS 3030806-50-6
2-(Cyclopentylmethyl)-7-(3-methoxyphenyl)-2H,3H,7H,8H-[1,2,4]triazolo[4,3-a]pyrazine-3,8-dione
CAS 3030806-50-6C18H20N4O3
1-[4-(6-Methoxypyrimidin-4-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole chemical structure, C18H20N4O3, CAS 3054581-59-5
1-[4-(6-Methoxypyrimidin-4-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole
CAS 3054581-59-5C18H20N4O3
6-[2-(2,3-Dihydro-1H-indole-1-carbonyl)morpholin-4-yl]-3-methyl-3,4-dihydropyrimidin-4-one chemical structure, C18H20N4O3, CAS 3054539-67-9
6-[2-(2,3-Dihydro-1H-indole-1-carbonyl)morpholin-4-yl]-3-methyl-3,4-dihydropyrimidin-4-one
CAS 3054539-67-9C18H20N4O3
1-[4-(5-Methoxypyrimidin-2-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole chemical structure, C18H20N4O3, CAS 3054605-20-5
1-[4-(5-Methoxypyrimidin-2-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole
CAS 3054605-20-5C18H20N4O3
1-[4-(4-Methoxypyrimidin-2-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole chemical structure, C18H20N4O3, CAS 3054639-95-8
1-[4-(4-Methoxypyrimidin-2-yl)morpholine-2-carbonyl]-2,3-dihydro-1H-indole
CAS 3054639-95-8C18H20N4O3
N-(4-Acetylphenyl)-2-{2-methyl-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-6-yl}acetamide chemical structure, C18H20N4O3, CAS 3054551-12-8
N-(4-Acetylphenyl)-2-{2-methyl-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-6-yl}acetamide
CAS 3054551-12-8C18H20N4O3
(5-(3,4-Dimethoxyphenyl)-1H-1,2,4-triazol-3-yl)(3-methoxyphenyl)methanamine chemical structure, C18H20N4O3, CAS 1708370-98-2
(5-(3,4-Dimethoxyphenyl)-1H-1,2,4-triazol-3-yl)(3-methoxyphenyl)methanamine
CAS 1708370-98-2C18H20N4O3
tert-Butyl (2R)-2-[5-(3-cyanophenyl)-1,3,4-oxadiazol-2-yl]pyrrolidine-1-carboxylate chemical structure, C18H20N4O3
tert-Butyl (2R)-2-[5-(3-cyanophenyl)-1,3,4-oxadiazol-2-yl]pyrrolidine-1-carboxylate
C18H20N4O3
4-[4-(Aminomethyl)phenyl]-3-[2,4-dihydroxy-5-(propan-2-yl)phenyl]-4,5-dihydro-1H-1,2,4-triazol-5-one chemical structure, C18H20N4O3, CAS 2768263-67-6
4-[4-(Aminomethyl)phenyl]-3-[2,4-dihydroxy-5-(propan-2-yl)phenyl]-4,5-dihydro-1H-1,2,4-triazol-5-one
CAS 2768263-67-6C18H20N4O3
7-(2-Deoxy-|A-D-erythro-pentofuranosyl)-5-(1,6-heptadiyn-1-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine chemical structure, C18H20N4O3, CAS 1065187-08-7
7-(2-Deoxy-|A-D-erythro-pentofuranosyl)-5-(1,6-heptadiyn-1-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine
CAS 1065187-08-7C18H20N4O3

Frequently asked questions

What is the molar mass of C18H20N4O3?

The molar mass of C18H20N4O3 is 340.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 340.1535 Da.

How many compounds have the formula C18H20N4O3?

CompoundList lists 324 compounds with the molecular formula C18H20N4O3, including 3-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)-1,2-dihydropyridin-2-one, 5-(3-{[(6-Cyclopropylpyridazin-3-yl)oxy]methyl}pyrrolidine-1-carbonyl)pyridin-3-ol, 2-(2,5-Dioxopyrrolidin-1-yl)-N-{2-[4-(1-methyl-1H-pyrazol-4-yl)phenyl]ethyl}acetamide. 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 C18H20N4O3?

C18H20N4O3 has a degree of unsaturation of 11. 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.