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
Compounds with the formula C18H21N3O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 343 of 343 compounds
![2-{[1-(4-Ethoxybenzoyl)azetidin-3-yl]methyl}-6-methyl-2,3-dihydropyridazin-3-one chemical structure, C18H21N3O3, CAS 2320887-40-7](/s/QDHAVPOZXUMALJ-UHFFFAOYSA-N.svg)
![N-[Imino[5-(phenylmethoxy)-2-pyridinyl]methyl]carbamic acid 1,1-dimethylethyl ester chemical structure, C18H21N3O3, CAS 1448674-61-0](/s/SWGNTVVBTDLQLF-UHFFFAOYSA-N.svg)
![3,4-Dimethoxy-N-methyl-N-[1-(pyridin-2-yl)azetidin-3-yl]benzamide chemical structure, C18H21N3O3, CAS 2415632-49-2](/s/IJONBYUGGURZBO-UHFFFAOYSA-N.svg)
![Methyl (2E)-3-({[1-(2-cyanophenyl)piperidin-4-yl]methyl}carbamoyl)prop-2-enoate chemical structure, C18H21N3O3, CAS 2411337-27-2](/s/PZZCVBXGUFDXCS-VOTSOKGWSA-N.svg)
![N-Methyl-N-[(phenylmethoxy)carbonyl]-L-phenylalanine hydrazide chemical structure, C18H21N3O3, CAS 74085-93-1](/s/WAFJYASFXSMTCD-INIZCTEOSA-N.svg)
![2-[5,6-Dimethoxy-1-(3-methoxyphenyl)-1H-1,3-benzodiazol-2-yl]ethan-1-amine chemical structure, C18H21N3O3, CAS 2757874-76-1](/s/UPRZCMMRLKMYME-UHFFFAOYSA-N.svg)
![N'-[(Cyclohexanecarbonyl)oxy][(quinolin-8-yl)oxy]ethanimidamide chemical structure, C18H21N3O3, CAS 88758-20-7](/s/DCZWZPAHQBEMOT-UHFFFAOYSA-N.svg)
![N-[(2-Methoxyphenyl)methyl]-6-(oxan-4-yl)pyrimidine-4-carboxamide chemical structure, C18H21N3O3, CAS 2415499-68-0](/s/LYFBWGCFAJFOGR-UHFFFAOYSA-N.svg)
![3-{[1-(3-Methoxybenzoyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine chemical structure, C18H21N3O3, CAS 2548994-06-3](/s/HJQOMSCMUGOWNL-UHFFFAOYSA-N.svg)
- 2-[2-(Morpholine-4-carbonyl)morpholin-4-yl]quinoline2640897-72-7C18H21N3O3
- 4-[2-(Morpholine-4-carbonyl)morpholin-4-yl]quinoline2640979-32-2C18H21N3O3
- 1-{[1-(2,3-Dihydro-1,4-benzodioxine-2-carbonyl)azetidin-3-yl]methyl}-2-ethyl-1H-imidazole2741912-83-2C18H21N3O3
- 1-{[1-(2,3-Dihydro-1,4-benzodioxine-5-carbonyl)azetidin-3-yl]methyl}-2-ethyl-1H-imidazole2742054-69-7C18H21N3O3
- 6-Methoxy-4-[3-(morpholine-4-carbonyl)azetidin-1-yl]quinoline2770591-22-3C18H21N3O3
- Benzyl N-[6-(4-hydroxypiperidin-1-yl)pyridin-3-yl]carbamate2803834-26-4C18H21N3O3
- tert-Butyl N-[3-cyano-1-(4-hydroxyphenyl)-4,5-dimethyl-1H-pyrrol-2-yl]carbamate2413869-75-5C18H21N3O3
- Benzyl N-[(1r,4r)-4-(4-hydroxypyrimidin-2-yl)cyclohexyl]carbamate2680817-01-8C18H21N3O3
- Benzyl N-[2-(4-hydroxypiperidin-1-yl)pyridin-3-yl]carbamate2680887-16-3C18H21N3O3
- Benzyl N-[5-(4-hydroxypiperidin-1-yl)pyridin-2-yl]carbamate2680663-54-9C18H21N3O3
- Benzyl N-(2-methoxyethyl)-N-{[1-(prop-2-yn-1-yl)-1H-pyrazol-3-yl]methyl}carbamate2680878-38-8C18H21N3O3
- Benzyl N-[5-(3-hydroxypiperidin-1-yl)pyridin-2-yl]carbamate2680685-12-3C18H21N3O3
- Benzyl 2-[2-(1-methyl-1H-pyrazol-4-yl)-2-oxoethyl]pyrrolidine-1-carboxylate2680750-37-0C18H21N3O3
- 3-{2-Methyl-6-[(piperidin-4-yl)methoxy]pyrimidin-4-yl}benzoic acid2438070-44-9C18H21N3O3
- 3-{2-Methyl-6-[(piperidin-3-yl)methoxy]pyrimidin-4-yl}benzoic acid2448739-59-9C18H21N3O3
- 7-Boc-2-phenyl-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-ol2966077-50-7C18H21N3O3
- Ethyl 4-[2,3-dihydro-2-oxo-3-(1-propyn-1-yl)-1H-benzo[d]imidazol-1-yl]-1-piperidinecarboxylate61272-91-1C18H21N3O3
- Ethyl 4-[2,3-dihydro-2-oxo-3-(Propargyl)-1H-benzo[d]imidazol-1-yl]-1-piperidinecarboxylate53786-63-3C18H21N3O3
- (8-Methyl-8-azabicyclo[3.2.1]octan-3-yl) 9-oxa-1,2-diazatricyclo[6.3.1.04,12]dodeca-2,4(12),5,7-tetraene-3-carboxylate223570-85-2C18H21N3O3
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-{[1-(4-Ethoxybenzoyl)azetidin-3-yl]methyl}-6-methyl-2,3-dihydropyridazin-3-one, N-[Imino[5-(phenylmethoxy)-2-pyridinyl]methyl]carbamic acid 1,1-dimethylethyl ester, Upadacitinib impurity 143. 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.