C21H18N2O7
37 compounds have this formula on CompoundList.
- Molar mass
- 410.38g/mol
- Monoisotopic mass
- 414.1365Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H18N2O7 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 7 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 × 2161.46%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 184.42%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 26.83%14.007 × 2 = 28.014 g/mol
- O Oxygen × 727.29%15.999 × 7 = 111.993 g/mol
Compounds with the formula C21H18N2O7
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 37 of 37 compounds
![(4E)-5-(4-Hydroxy-3-methoxyphenyl)-4-[hydroxy(5-methylfuran-2-yl)methylidene]-1-(5-methyl-1,2-oxazol-3-yl)pyrrolidine-2,3-dione chemical structure, C21H18N2O7, CAS 843619-49-8](/s/DVHOMZQYMNPOBQ-UHFFFAOYSA-N.svg)
![Ethyl 4-[3-acetyl-4-hydroxy-2-(4-nitrophenyl)-5-oxo-2H-pyrrol-1-yl]benzoate chemical structure, C21H18N2O7, CAS 311321-09-2](/s/GNKNFUXQBSFJMQ-UHFFFAOYSA-N.svg)
![Ethyl 3-(3-nitrophenyl)-3-{[(2-oxo-2H-chromen-3-yl)carbonyl]amino}propanoate chemical structure, C21H18N2O7, CAS 681853-19-0](/s/WVKJIRWVJKELSW-UHFFFAOYSA-N.svg)
![3-Isoxazolecarboxylic acid,4-amino-5-[3-[(1E)-3-[3-hydroxy-2-(methoxycarbonyl)phenoxy]-1-propen-1-yl]phenyl]- chemical structure, C21H18N2O7, CAS 745079-13-4](/s/YTVRHCPRVOWGNG-GQCTYLIASA-N.svg)
![6-Methoxy-3-[3-(3,4,5-trimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2H-chromen-2-one chemical structure, C21H18N2O7, CAS 892759-02-3](/s/YJOQJWMFRZHHLD-UHFFFAOYSA-N.svg)
![Methyl 1-allyl-2'-amino-6'-(hydroxymethyl)-2,8'-dioxo-8'H-spiro[indoline-3,4'-pyrano[3,2-b]pyran]-3'-carboxylate chemical structure, C21H18N2O7, CAS 884214-79-3](/s/DOQQYIYCMMZDHV-UHFFFAOYSA-N.svg)
![4-[(3E)-3-[Hydroxy(phenyl)methylidene]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-1-yl]butanoic acid chemical structure, C21H18N2O7, CAS 309724-56-9](/s/CZTGSDRZSYNCIU-HTXNQAPBSA-N.svg)
![4-[(3E)-3-[Hydroxy(phenyl)methylidene]-2-(4-nitrophenyl)-4,5-dioxopyrrolidin-1-yl]butanoic acid chemical structure, C21H18N2O7, CAS 5961-32-0](/s/SARRHCSDTONFOG-HTXNQAPBSA-N.svg)
![4-({2-Methoxy-4-[(E)-(1-methyl-2,4,6-trioxotetrahydropyrimidin-5(2H)-ylidene)methyl]phenoxy}methyl)benzoic acid chemical structure, C21H18N2O7, CAS 313704-71-1](/s/KQXLQLWCZSEEND-OQLLNIDSSA-N.svg)
![2-[2-[(Z)-[1-(4-Ethoxyphenyl)-2,4,6-trioxo-1,3-diazinan-5-ylidene]methyl]phenoxy]acetic acid chemical structure, C21H18N2O7, CAS 373613-02-6](/s/SHBSIGOCIBABAJ-WJDWOHSUSA-N.svg)
![8-Methoxy-3-[3-(3,4,5-trimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2H-chromen-2-one chemical structure, C21H18N2O7, CAS 892756-81-9](/s/CYMAAVVWJRVUSI-UHFFFAOYSA-N.svg)
![{2-Ethoxy-4-[(Z)-(2,4,6-trioxo-1-phenyltetrahydropyrimidin-5(2H)-ylidene)methyl]phenoxy}acetic acid chemical structure, C21H18N2O7, CAS 330955-88-9](/s/ZKNYBSPKMRCMIN-GDNBJRDFSA-N.svg)
![7-Methoxy-3-[3-(3,4,5-trimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2H-chromen-2-one chemical structure, C21H18N2O7, CAS 892758-81-5](/s/YWZGNTPUDWZRET-UHFFFAOYSA-N.svg)
![N-{[(2-Oxo-4-phenyl-2H-chromen-7-yl)oxy]acetyl}glycylglycine chemical structure, C21H18N2O7, CAS 374704-19-5](/s/BLQIYOGUKHMCJJ-UHFFFAOYSA-N.svg)
- Methyl 2-[2-[2-(1,3-benzodioxol-5-ylamino)-2-oxoethyl]-1-oxoisoquinolin-5-yl]oxyacetate868225-15-4C21H18N2O7
- Ethyl 4-[3-acetyl-4-hydroxy-2-(3-nitrophenyl)-5-oxo-2H-pyrrol-1-yl]benzoate371128-96-0C21H18N2O7
- Methyl 4-(2-(benzo[d][1,3]dioxol-5-ylamino)-2-oxoethoxy)-6-methoxyquinoline-2-carboxylate1359508-51-2C21H18N2O7
- Dimethyl 5-[3-(methoxycarbonyl)-2-methyl-5-oxo-1,6-naphthyridin-6(5H)-yl]benzene-1,3-dicarboxylate1010913-58-2C21H18N2O7
- 2,5-Dioxopyrrolidin-1-yl 2-(((((9H-fluoren-9-yl)methoxy)carbonyl)amino)oxy)acetate219635-69-5C21H18N2O7
- 5-(4,5-Dimethoxy-3-oxo-1H-2-benzofuran-1-yl)-1-(2-methylphenyl)-1,3-diazinane-2,4,6-trione371943-43-0C21H18N2O7
- 4-Benzyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl) morpholine-3,4-dicarboxylate2248267-70-9C21H18N2O7
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 2-cyclopropaneamido-4,5-dimethoxybenzoate2248371-12-0C21H18N2O7
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(3,5-dimethoxyphenyl)-5-oxopyrrolidine-3-carboxylate2248324-81-2C21H18N2O7
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-({[(benzyloxy)carbonyl]amino}methyl)oxetane-3-carboxylate2248396-12-3C21H18N2O7
- 5-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-(2-hydroxyethoxy)-1,2-oxazole-4-carboxylic acid2386433-31-2C21H18N2O7
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(2,4-dimethoxyphenyl)-5-oxopyrrolidine-3-carboxylate2248273-48-3C21H18N2O7
- Letrozole-D4 carbinol Glucuronide1361326-43-3C21H18N2O7
Frequently asked questions
What is the molar mass of C21H18N2O7?
The molar mass of C21H18N2O7 is 410.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 7 oxygen atoms. The monoisotopic mass is 414.1365 Da.
How many compounds have the formula C21H18N2O7?
CompoundList lists 37 compounds with the molecular formula C21H18N2O7, including (4E)-5-(4-Hydroxy-3-methoxyphenyl)-4-[hydroxy(5-methylfuran-2-yl)methylidene]-1-(5-methyl-1,2-oxazol-3-yl)pyrrolidine-2,3-dione, Ethyl 4-[3-acetyl-4-hydroxy-2-(4-nitrophenyl)-5-oxo-2H-pyrrol-1-yl]benzoate, Ethyl 3-(3-nitrophenyl)-3-{[(2-oxo-2H-chromen-3-yl)carbonyl]amino}propanoate. 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 C21H18N2O7?
C21H18N2O7 has a degree of unsaturation of 14. 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.