Molecular formula

C₂₁H₁₈Cl₂N₂O₃

21 compounds have this formula on CompoundList.

Molar mass: 417.29g/mol
Monoisotopic mass: 416.0694Da
Atoms: 46
Elements: 5
Rings plus double bonds: 13

The formula C21H18Cl2N2O3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 chlorine atoms, 2 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 × 2160.45%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 184.35%
1.008 × 18 = 18.144 g/mol
Cl Chlorine × 216.99%
35.45 × 2 = 70.900 g/mol
N Nitrogen × 26.71%
14.007 × 2 = 28.014 g/mol
O Oxygen × 311.50%
15.999 × 3 = 47.997 g/mol

Look up another formula

Compounds with the formula C21H18Cl2N2O3

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

Showing 1 to 21 of 21 compounds

RefChem:558506

CAS 1798310-55-0C₂₁H₁₈Cl₂N₂O₃

1-(3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)-6,7-dimethoxy-3,4-dihydroisoquinoline

CAS 501649-84-9C₂₁H₁₈Cl₂N₂O₃

2,4-Dioxo-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinoline-3-carbaldehyde O-(2,4-dichlorobenzyl)oxime

CAS 344262-15-3C₂₁H₁₈Cl₂N₂O₃

4-Acetyl-5,6-bis(4-chlorophenyl)-2-(1-hydroxypropan-2-yl)pyridazin-3-one

CAS 75643-73-1C₂₁H₁₈Cl₂N₂O₃

4-Acetyl-5,6-bis(4-chlorophenyl)-2-(2-methoxyethyl)pyridazin-3-one

CAS 75644-01-8C₂₁H₁₈Cl₂N₂O₃

Fenpirithrin

CAS 68523-18-2C₂₁H₁₈Cl₂N₂O₃

5-Chloro-7-(morpholinomethyl)quinolin-8-yl 4-chlorobenzoate

CAS 380556-60-5C₂₁H₁₈Cl₂N₂O₃

(6-Chloro-4-hydroxyquinolin-3-yl)[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]methanone

CAS 1630904-41-4C₂₁H₁₈Cl₂N₂O₃

(7-Chloro-4-hydroxyquinolin-3-yl)[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]methanone

CAS 1630856-43-7C₂₁H₁₈Cl₂N₂O₃

N-[5-(Butanoylamino)-2-chlorophenyl]-5-(3-chlorophenyl)furan-2-carboxamide

CAS 639050-56-9C₂₁H₁₈Cl₂N₂O₃

1-(2,4-Dichlorobenzyl)-N-(2-ethoxyphenyl)-2-oxo-1,2-dihydro-3-pyridinecarboxamide

CAS 320419-69-0C₂₁H₁₈Cl₂N₂O₃

2-(4-Benzylpiperazine-1-carbonyl)-6,8-dichloro-4H-chromen-4-one

CAS 905781-14-8C₂₁H₁₈Cl₂N₂O₃

(8-Chloro-4-hydroxyquinolin-3-yl)[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]methanone

CAS 1630865-97-2C₂₁H₁₈Cl₂N₂O₃

5-(2,5-Dichlorophenyl)-N-[4-(2-methylpropanoylamino)phenyl]furan-2-carboxamide

CAS 640757-66-0C₂₁H₁₈Cl₂N₂O₃

1-(2,4-Dichlorobenzyl)-N-(4-ethoxyphenyl)-2-oxo-1,2-dihydro-3-pyridinecarboxamide

CAS 320419-70-3C₂₁H₁₈Cl₂N₂O₃

5-(2,4-Dichlorophenyl)-N-[4-(2-methylpropanoylamino)phenyl]furan-2-carboxamide

CAS 836666-61-6C₂₁H₁₈Cl₂N₂O₃

Methyl (3S)-2-(chloroacetyl)-1-(3-chlorophenyl)-2,3,4,9-tetrahydro-1H-beta-carboline-3-carboxylate

CAS 1217543-97-9C₂₁H₁₈Cl₂N₂O₃

(2Z)-6-Chloro-2-[(2-chlorophenyl)imino]-N-[(oxolan-2-yl)methyl]-2H-chromene-3-carboxamide

CAS 1327170-06-8C₂₁H₁₈Cl₂N₂O₃

(2Z)-6-Chloro-2-[(3-chlorophenyl)imino]-N-[(oxolan-2-yl)methyl]-2H-chromene-3-carboxamide

CAS 1327181-21-4C₂₁H₁₈Cl₂N₂O₃

2-Cyano-3-{4-[(2,4-dichlorophenyl)methoxy]-3-methoxyphenyl}-N-(prop-2-en-1-yl)prop-2-enamide

CAS 1014267-36-7C₂₁H₁₈Cl₂N₂O₃

Benzamide,3-amino-5-chloro-N-[5-chloro-2-(2-phenylethoxy)phenyl]-2-hydroxy-

CAS 648925-84-2C₂₁H₁₈Cl₂N₂O₃

Frequently asked questions

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What is the molar mass of C21H18Cl2N2O3?

The molar mass of C21H18Cl2N2O3 is 417.29 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 chlorine atoms, 2 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 416.0694 Da.

How many compounds have the formula C21H18Cl2N2O3?

CompoundList lists 21 compounds with the molecular formula C21H18Cl2N2O3, including RefChem:558506, 1-(3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)-6,7-dimethoxy-3,4-dihydroisoquinoline, 2,4-Dioxo-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinoline-3-carbaldehyde O-(2,4-dichlorobenzyl)oxime. 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 C21H18Cl2N2O3?

C21H18Cl2N2O3 has a degree of unsaturation of 13. 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.