C18H21N3O4
333 compounds have this formula on CompoundList.
- Molar mass
- 343.38g/mol
- Monoisotopic mass
- 347.1783Da
- Atoms
- 46
- Elements
- 4
- Rings plus double bonds
- 10
The formula C18H21N3O4 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 4 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 × 1862.96%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.16%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 312.24%14.007 × 3 = 42.021 g/mol
- O Oxygen × 418.64%15.999 × 4 = 63.996 g/mol
Compounds with the formula C18H21N3O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 333 of 333 compounds
![tert-Butyl N-{[6-(3-hydroxybenzamido)pyridin-3-yl]methyl}carbamate chemical structure, C18H21N3O4, CAS 2413900-39-5](/s/SKUBBZOSNUKLGE-UHFFFAOYSA-N.svg)
![tert-Butyl N-({4-[(2-hydroxyphenyl)carbamoyl]pyridin-2-yl}methyl)carbamate chemical structure, C18H21N3O4, CAS 2413884-74-7](/s/VOGKSRUZYRQHTI-UHFFFAOYSA-N.svg)
![5-[(Benzyloxy)carbonyl]-2-tert-butyl-2H,4H,5H,6H-pyrrolo[3,4-c]pyrazole-4-carboxylic acid chemical structure, C18H21N3O4, CAS 2137507-31-2](/s/RAAMIRKSBJWAKC-UHFFFAOYSA-N.svg)
![2-{[(Benzyloxy)carbonyl]amino}-2-cyclopropyl-3-(3-methyl-1H-pyrazol-1-yl)propanoic acid chemical structure, C18H21N3O4, CAS 2138521-20-5](/s/PKRINIFVAFXQOZ-UHFFFAOYSA-N.svg)
![2-{[(Benzyloxy)carbonyl]amino}-3-(4-cyclopropyl-1H-pyrazol-1-yl)-2-methylpropanoic acid chemical structure, C18H21N3O4, CAS 2138565-59-8](/s/AOEYOMYETISRBX-UHFFFAOYSA-N.svg)
![2-{[(Benzyloxy)carbonyl]amino}-2-cyclopropyl-3-(5-methyl-1H-pyrazol-1-yl)propanoic acid chemical structure, C18H21N3O4, CAS 2138549-26-3](/s/FGELYLKASBBZRA-UHFFFAOYSA-N.svg)
![1-[(Benzyloxy)carbonyl]-4-(1-ethyl-1H-pyrazol-5-yl)pyrrolidine-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2171901-10-1](/s/SCEWJNLTNYDETK-UHFFFAOYSA-N.svg)
![1-[(Benzyloxy)carbonyl]-6-(propan-2-yl)-1H,2H,3H,4H-imidazo[1,5-a]pyrimidine-8-carboxylic acid chemical structure, C18H21N3O4, CAS 2137730-59-5](/s/PWYKKQQUPJYIEG-UHFFFAOYSA-N.svg)
![2-{1-[(Benzyloxy)carbonyl]piperidin-3-yl}-4-methyl-1H-imidazole-5-carboxylic acid chemical structure, C18H21N3O4, CAS 2385990-27-0](/s/IPTHGWBVHXXOAU-UHFFFAOYSA-N.svg)
![2-{1-[(Benzyloxy)carbonyl]piperidin-4-yl}-4-methyl-1H-imidazole-5-carboxylic acid chemical structure, C18H21N3O4, CAS 2580219-10-7](/s/YOQNXTYUIXLLBG-UHFFFAOYSA-N.svg)
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(1,5-dimethyl-1H-pyrazol-4-yl)pyrrolidine-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2350670-73-2](/s/WDVOLSIFXQWTPF-JKSUJKDBSA-N.svg)
![1-{1-[(Benzyloxy)carbonyl]piperidin-3-yl}-4-methyl-1H-pyrazole-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2580198-32-7](/s/ZWZMUGYKYGSAQQ-UHFFFAOYSA-N.svg)
![1-{1-[(Benzyloxy)carbonyl]piperidin-3-yl}-4-methyl-1H-pyrazole-5-carboxylic acid chemical structure, C18H21N3O4, CAS 2580248-92-4](/s/HYTOJKGNJMCJGD-UHFFFAOYSA-N.svg)
![2-(1-{[(Benzyloxy)carbonyl]amino}cyclohexyl)-1H-imidazole-4-carboxylic acid chemical structure, C18H21N3O4, CAS 2580199-29-5](/s/ZJLGXPOFCUBARY-UHFFFAOYSA-N.svg)
![5-[(tert-Butoxy)carbonyl]-1-phenyl-1H,4H,5H,6H,7H-pyrazolo[4,3-c]pyridine-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2639443-12-0](/s/PDPKVRPORHYUOY-UHFFFAOYSA-N.svg)
![rac-(4R,6R)-5-[(tert-Butoxy)carbonyl]-4-phenyl-3H,4H,5H,6H,7H-imidazo[4,5-c]pyridine-6-carboxylic acid chemical structure, C18H21N3O4, CAS 2639391-65-2](/s/MFAGBCCKIXGZHK-ZFWWWQNUSA-N.svg)
![1-[(Benzyloxy)carbonyl]-5-(1-methyl-1H-pyrazol-4-yl)piperidine-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2680757-98-4](/s/XGGNLDCWUNTRMZ-UHFFFAOYSA-N.svg)
![2-{[(Benzyloxy)carbonyl]amino}-3-[2-(dimethylamino)pyridin-4-yl]propanoic acid chemical structure, C18H21N3O4, CAS 2680561-30-0](/s/ONQMNWSWUCPSRZ-UHFFFAOYSA-N.svg)
amino}-2-methylbenzoic acid chemical structure, C18H21N3O4, CAS 2680893-10-9](/s/WGYUMOWAFWAQHB-UHFFFAOYSA-N.svg)
amino}pyridine-3-carboxylic acid chemical structure, C18H21N3O4, CAS 2680724-63-2](/s/ZXZOGNVOXZJKSU-UHFFFAOYSA-N.svg)
amino}methyl)benzoic acid chemical structure, C18H21N3O4, CAS 2680688-03-1](/s/IJGPMQUVRTUYPU-UHFFFAOYSA-N.svg)
amino}methyl)benzoic acid chemical structure, C18H21N3O4, CAS 2680738-15-0](/s/TYGLDQRFMPODSX-UHFFFAOYSA-N.svg)
![Benzyl N-{1-[(3-hydroxypyridin-2-yl)carbamoyl]-1-methylpropan-2-yl}carbamate chemical structure, C18H21N3O4, CAS 2764019-29-4](/s/VILPWNHSLTZSNJ-UHFFFAOYSA-N.svg)
![Prop-2-en-1-yl 4-{[(benzyloxy)carbonyl]amino}-4-cyanopiperidine-1-carboxylate chemical structure, C18H21N3O4, CAS 2770554-52-2](/s/DIIKSVQMIWHQIV-UHFFFAOYSA-N.svg)
- 3-(5-((R)-3-(Hydroxymethyl)pyrrolidin-1-yl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione3024120-63-3C18H21N3O4
- Methyl 2-[[4-[5-[(hydroxyamino)iminomethyl]-2-pyridinyl]phenoxy]methyl]-2-methylpropanoate1383001-90-8C18H21N3O4
- tert-Butyl N-[2-(5-nitro-2-pyridin-4-ylphenyl)ethyl]carbamate1799563-63-5C18H21N3O4
- tert-Butyl N-[2-(5-nitro-2-pyridin-3-ylphenyl)ethyl]carbamate1799563-66-8C18H21N3O4
- N-[2-(2,6-Dioxo-3-piperidyl)-1-oxo-isoindolin-4-yl]-3-methyl-butanamide2319076-63-4C18H21N3O4
- (R)-2-((tert-Butoxycarbonyl)amino)-3-(2-phenylpyrimidin-5-yl)propanoic acid2387567-13-5C18H21N3O4
- 6-((tert-Butoxycarbonyl)(2-(pyridin-2-yl)ethyl)amino)nicotinic acid2382569-60-8C18H21N3O4
- Methyl (2S)-3-(4-cyano-1H-indol-3-yl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoateC18H21N3O4
- N-(2-(2,6-Dioxopiperidin-3-yl)-1-oxoisoindolin-4-yl)-2-methylbutanamide2845136-41-4C18H21N3O4
Frequently asked questions
What is the molar mass of C18H21N3O4?
The molar mass of C18H21N3O4 is 343.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 347.1783 Da.
How many compounds have the formula C18H21N3O4?
CompoundList lists 333 compounds with the molecular formula C18H21N3O4, including tert-Butyl N-{[6-(3-hydroxybenzamido)pyridin-3-yl]methyl}carbamate, tert-Butyl N-({4-[(2-hydroxyphenyl)carbamoyl]pyridin-2-yl}methyl)carbamate, 5-[(Benzyloxy)carbonyl]-2-tert-butyl-2H,4H,5H,6H-pyrrolo[3,4-c]pyrazole-4-carboxylic acid. 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 C18H21N3O4?
C18H21N3O4 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.